The present disclosure provides a ternary positive electrode material, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a nickel source, a cobalt source and a solvent, freezing to obtain a frozen solution A, mixing an aluminum source, a complexing agent and a solvent, freezing to obtain a frozen solution B, crushing the frozen solution A and the frozen solution B at a low temperature, pressing, and freezing to obtain a frozen solution C; (2) placing the frozen solution C in a backflow device, controlling an alkaline backflow liquid to flow back between the backflow device and a reaction device until the frozen liquid C is completely melted to obtain a suspension; and (3) carrying out solid-liquid separation on the suspension, mixing the obtained solid product with a lithium source, and sintering to obtain a ternary positive electrode material. According to the present disclosure, a simple backflow melting operation is used, the proportion of elements of the material can be guaranteed by means of a simple operation, uniform coprecipitation of nickel, cobalt and aluminum is achieved, and an ammonia complexing agent does not need to be used in the method, such that the environmental pollution is reduced, the distribution of the elements of the prepared ternary positive electrode material is uniform, and the lattice order degree is high.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
A vehicle-mounted battery recovery device (10), comprising a base (100), a suspension carrying mechanism (200), and a material feeding mechanism (300), a liquid cooling mechanism (400), and a positioning and conveying mechanism (500) sequentially arranged along the suspension carrying mechanism (200). The material feeding mechanism (300) is arranged on the base (100) and configured to convey a battery positioning disc (20) to a first predetermined position. The liquid cooling mechanism (400) comprises a liquid cooling driving member (410) and a first sliding door (420). The base (100) is provided with a freezing liquid nitrogen receiving tank (102) and a first sliding slot (104), and the freezing liquid nitrogen receiving tank (102) is communicated with the first sliding slot (104). The liquid cooling driving member (410) is mounted on the base (100). The first sliding door (420) is located in the first sliding slot (104) and slidably connected to the base (100). A power output end of the liquid cooling driving member (410) is connected to the first sliding door (420), so as to drive the first sliding door (420) to open or close the freezing liquid nitrogen receiving tank (102). The suspension carrying mechanism (200) is located above the base (100) and is configured to loosen or clamp the battery positioning disc (20), so as to carry the battery positioning disc (20) from the material feeding mechanism (300) to the freezing liquid nitrogen receiving tank (102) and the positioning and conveying mechanism (500) sequentially. The positioning and conveying mechanism (500) is mounted on the base (100) and configured to position and convey the battery positioning disc (20). The vehicle-mounted battery recovery device (10) further comprises a shell-removal mechanism (1100) and a core-removal mechanism sequentially arranged along a conveying direction of the positioning and conveying mechanism (500).
Provided in the present disclosure are a lithium manganese iron phosphate positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing an iron source, a manganese source and a solvent, freezing the mixture to obtain a frozen solution A, freezing a phosphorus source solution to obtain a frozen solution B, crushing the frozen solution A and the frozen solution B at a low temperature, and pressing and freezing same to obtain a frozen solution C; (2) placing the frozen solution C in a reflux device, mixing a complexing agent and hydrogen peroxide to obtain a mixed solution, controlling the reflux of the mixed solution between the reflux device and a reaction device, and controlling the concentration and pH of the complexing agent in the system until the frozen solution C is completely melted to obtain a turbid liquid; and (3) subjecting the turbid liquid to a solid-liquid separation treatment, then mixing same with a lithium source, and sintering the mixture to obtain a lithium manganese iron phosphate positive electrode material. In the present disclosure, the raw material solutions are prepared into frozen solutions in advance, and the dissolution of the frozen solutions is controlled by using a reflux method, such that a coprecipitation reaction is slowly carried out, thereby preparing a lithium manganese iron phosphate positive electrode material having a small particle size and uniform element distribution.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
4.
IRON PHOSPHATE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Iron phosphate, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing a ferrous salt, a phosphorus source and a solvent to obtain a mixed salt solution, and freezing the mixed salt solution to obtain a frozen mixed salt solution; (2) placing the frozen mixed salt solution in a reflux device, controlling the reflux of a hydrogen peroxide solution between the reflux device and a reaction device, controlling the concentration of hydrogen peroxide in the system, and performing a reaction until the frozen mixed salt solution is completely dissolved; and (3) adjusting the pH in the system, and subjecting same to an aging reaction and solid-liquid separation to obtain iron phosphate. The solution containing the ferrous salt and the phosphorus source is frozen in advance, hydrogen peroxide is controlled to flow through the frozen mixed salt solution, and the reaction can be slowly performed by controlling the concentration and flow rate of hydrogen peroxide, such that the iron element and the phosphorus element in the prepared iron phosphate precursor are uniformly distributed, and surface defects are few.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
5.
METHOD FOR FULL-CHAIN INTEGRATED RECYCLING OF LITHIUM-EXTRACTED FERROPHOSPHORUS SLAG FROM WASTE BATTERIES
Disclosed is a method for full-chain integrated recycling of post-lithium-extractraction ferrophosphorus slag from waste batteries. The method comprises the following steps: (1) carrying out primary acid leaching on post-lithium-extractraction ferrophosphorus slag, and adding an iron ion precipitant for reaction to obtain impurity-removed ferrophosphorus slag; (2) carrying out secondary acid leaching on the impurity-removed ferrophosphorus slag to obtain a ferrophosphorus solution; and (3) mixing the ferrophosphorus solution with a buffer solution, carrying out a precipitation reaction, and carrying out heat treatment on obtained precipitates upon completion of reaction to obtain iron phosphate. According to the present application, firstly, impurities in ferrophosphorus slag are removed by means of primary acid leaching, and an iron ion precipitant is added such that iron ions dissolved in the acid leaching form precipitates, avoiding iron loss; and then secondary acid leaching is carried out such that all Fe and P are leached out, effectively increasing the recovery rate of iron in the ferrophosphorus slag. In addition, the iron phosphate precipitation process is carried out in a buffer solution, so that the purity of iron phosphate can be increased, and the uniform consistency of iron phosphate particles can be improved, thereby obtaining high-quality iron phosphate.
A low-carbon battery cell separator and electrode plate separation and recovery device. A traction member pulls an electrode assembly to move in a first direction and through a cutting member, one of recovery mechanisms, one of tearing mechanisms, a further recovery mechanism, a further tearing mechanism and the remaining recovery mechanisms in sequence, so as to recover a first separator, a first electrode plate, a second electrode plate and a second separator in sequence, realizing the automatic recovery of separators and electrode plates of battery cells.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
7.
BATTERY CELL ELECTRODE SHEET AND SEPARATOR WINDING DEVICE
A battery cell electrode sheet and separator winding device. An electrode sheet or a separator is held in place by means of suction cup assemblies (14), and a first driving member drives a rotary drum (11) to rotate, so as to drive the electrode sheet or the separator to cover onto a plurality of suction cup assemblies (14), a plurality of guide rollers (13), and an insertion roller (15), which are located outside of the rotary drum (11); when the rotary drum (11) drives the insertion roller (15) to move to a protrusion of a cam (12), the insertion roller (15) moves outwards in the radial direction of the rotary drum (11) and passes through an insertion slot (211) of a winding drum (21), so as to insert the electrode sheet or the separator into the winding drum (21); then, the rotary drum (11) continues to rotate, such that, under the action of an elastic member (16), the insertion roller (15) exits from the insertion slot (211); next, a third driving member drives a pressing member (22) to fix against an inner wall of the winding drum (21) the electrode sheet or the separator that has been pushed into the winding drum (21); thus, by means of a second driving member driving the winding drum (21) to rotate, the electrode sheet or the separator can be wound into the winding drum (21). The battery cell electrode sheet and separator winding device can complete a winding operation without the need for manually fixing the end of an electrode sheet or a separator, and is thus highly practical.
Provided in the present disclosure is a method for preparing iron phosphate by means of full-chain integrated recycling of a waste lithium iron phosphate battery. The method comprises the following steps: (1) mixing a waste lithium iron phosphate material with a mixed chloride, and heating and melting the mixture, so as to obtain a mixed melt; (2) mixing the mixed melt with sodium stearate, then subjecting the mixture to a blowing reaction, and separating same to obtain carbon-containing lithium iron phosphate scum; (3) mixing the scum with an acid solution, adding hydrogen peroxide to perform a leaching reaction, and carrying out solid-liquid separation to obtain a lithium-containing solution and carbon-containing phosphorus iron slag; and (4) mixing the carbon-containing phosphorus iron slag with an acid solution, leaching the mixture to obtain a phosphorus iron solution, adjusting the phosphorus iron ratio, and adding a complexing agent to perform a coprecipitation reaction, so as to obtain iron phosphate. The method of the present disclosure can improve the purity of the recycled lithium, also avoid a multi-step impurity-removal process required to be carried out during the process of preparing iron phosphate from the phosphorus iron slag after lithium extraction, and further improve the purity and phosphorus iron recovery rate of the iron phosphate prepared from the phosphorus iron slag.
A composite lithium manganese iron phosphate material, and a preparation method therefor and the use thereof, which are used in the technical field of lithium-ion battery positive electrode materials. The composite lithium manganese iron phosphate material comprises a lithium manganese iron phosphate active material and a solid additive, the solid additive comprising a porous solid electrolyte and a lithium manganese iron phosphate deposit, wherein the lithium manganese iron phosphate deposit is deposited on pores and the surface of the porous solid electrolyte, and the solid additive is dispersed inside and on the surface of the lithium manganese iron phosphate active material in a particle form. A solid electrolyte transport channel is added to the lithium manganese iron phosphate active material, thereby increasing the contact between a positive electrode and a solid electrolyte sheet, and significantly improving both the transport efficiency and ionic conductivity of interface lithium ions and the cycling stability and chargeable and dischargeable capacity of a battery.
A battery discharge and casing removal device (10), comprising: a machine body (100), a first conveying mechanism (200), a battery placement support (300), a discharge mechanism (400), a second conveying mechanism (500), a casing removal mechanism (600), a core extraction mechanism (700) and a carrying mechanism (800). The second conveying mechanism (500) comprises a rotating component (520). A plurality of batteries (20) are loaded in batches at a loading position to a positioning discharge area via the battery placement support (300), and are subjected to batch discharging by means of the discharge mechanism (400); and the carrying mechanism (800) moves the battery placement support (300) from the positioning discharge area to the rotating component (520) for batch casing removal and core extraction processing. Performing batch discharge, casing removal and core extraction processing on the plurality of batteries (20) shortens the overall recovery time of the batteries (20).
A vehicle-mounted crushing apparatus (10), comprising: a vehicle container (100); a crushing mechanism (200), which comprises a crushing box (210), a filter plate (220), a sliding door assembly (230) and a crushing assembly (240), wherein the crushing box (210) is mounted in the vehicle container (100), a crushing cavity (202) is provided in the crushing box (210), a feeding port (204) in communication with the crushing cavity (202) is provided in the top of the crushing box (210), an oxygen concentration sensor (2023) is provided in the crushing cavity (202), the filter plate (220) is transversely arranged in the crushing cavity (202) and is connected to an inner wall of the crushing box (210), a plurality of liquid passing holes (222) distributed at intervals are provided in the filter plate (220), a discharge port (206) in communication with a main crushing cavity (2022) is provided on a side wall of the crushing box (210), the sliding door assembly (230) is slidably connected to the crushing box (210), the sliding door assembly (230) is configured to open or close the discharge port (206), the crushing assembly (240) is mounted at the feeding port (204), and the crushing assembly (240) is configured to crush a battery; a nitrogen supply mechanism (300), which comprises a nitrogen pipe body (310) and a supply control valve (320), wherein one end of the nitrogen pipe body (310) is in communication with the main crushing cavity (2022), and the other end of the nitrogen pipe body (310) is externally connected to a nitrogen source, the supply control valve (320) is arranged on the nitrogen pipe body (310), a control end of the supply control valve (320) is electrically connected to the oxygen concentration sensor (2023), and the supply control valve (320) is configured to be opened when the oxygen concentration in the crushing cavity (202) is equal to a preset concentration threshold value; and a waste gas treatment mechanism (400), which is located in the vehicle container (100), wherein the waste gas treatment mechanism (400) is in communication with each of the main crushing cavity (2022) and an evaporation cavity (2024), and the waste gas treatment mechanism (400) is configured for temporary storage and processing of a waste gas.
Provided in the present disclosure are a ternary positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing a nickel source, a cobalt source, a non-ammonia complexing agent and a solvent, freezing the mixture to obtain a frozen solution A, freezing a manganese salt solution to obtain a frozen solution B, crushing the frozen solution A and the frozen solution B at a low temperature, and pressing and freezing same to obtain a frozen solution C; (2) placing the frozen solution C in a reflux device, controlling the reflux flow of an alkaline reflux between the reflux device and a reaction device until the frozen solution C is completely melted to obtain a turbid liquid, and subjecting the turbid liquid to solid-liquid separation to obtain a precursor; and (3) mixing the precursor with a lithium source, and sintering the mixture to obtain a ternary positive electrode material. By means of the method of the present disclosure, grains can be slowly generated, thereby avoiding a seed crystal agglomeration phenomenon caused by excessive fast growth, and nickel, cobalt and manganese elements in the prepared precursor are uniformly distributed, thereby improving the electrochemical performance of the ternary positive electrode material.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
13.
PRUSSIAN BLUE POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A Prussian blue positive electrode material, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) respectively freezing a portion of a sodium ferrocyanide solution and a portion of a transition metal salt solution, crushing the frozen sodium ferrocyanide solution and the frozen transition metal salt solution at a low temperature and mixing same, and pressing and freezing to obtain a frozen mixed solution; (2) mixing the other portion of the sodium ferrocyanide solution and the other portion of the transition metal salt solution at a low temperature, and then performing heating treatment to obtain a seed crystal suspension; and (3) placing the frozen mixed solution in a backflow device, controlling the seed crystal suspension to flow back between a reaction kettle and the backflow device until the frozen mixed solution is completely dissolved, and then performing aging treatment to obtain a Prussian blue positive electrode material. According to the method, the reaction rate can be controlled, so that the reaction rate is low, particle agglomeration is reduced, and the electrical performance of the material is more excellent.
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
14.
LITHIUM EXTRACTION ELECTRODE, LITHIUM EXTRACTION METHOD, AND LITHIUM EXTRACTION SYSTEM
A lithium extraction electrode, a lithium extraction method, and a lithium extraction system. The lithium extraction electrode is designed based on a specific structure, and, after a lithium removal reaction is performed, can be directly used in electrochemical lithium extraction of water; after lithium extraction is completed, lithium ions can be directly recycled by means of a reverse reaction, and the lithium ions can be put into a next batch of water for lithium extraction. Thus there is no requirement for replacement or apparatus assistance, and lithium extraction efficiency is high.
The present invention relates to the technical field of oil-water separation devices. Disclosed are an oil removal apparatus and a flushing method therefor. The oil removal apparatus comprises a tank body. A lower water distribution region, a first-stage material filling region, an intermediate water collection region, a second-stage material filling region, and an upper water collection region are arranged in sequence from bottom to top in the tank body. A water intake pipe and a water drainage pipe are provided on the tank body. Two layers of perforated plates are disposed in the intermediate water collection region in the tank body. The tank body is further provided with a first-stage water production pipe and a second-stage water production pipe. The water intake pipe, the water drainage pipe, the first-stage water production pipe, and the second-stage water production pipe each is provided with a valve. The tank body is further provided with manholes in one-to-one correspondence with the first-stage material filling region, the intermediate water collection region, and the upper water collection region. The tank body is provided with material discharging ports at the bottoms of the first-stage material filling region and the second-stage material filling region. Water intake and discharge can selectively be performed by means of different piping, and different flushing methods are selected for a first-stage filling material and a second-stage filling material, so that the oil removal effect is improved and the amount of backwashing wastewater is reduced. Material discharging and replacement can be performed on the first-stage filling material and the second-stage filling material by means of material discharging ports, so that the waste of activated carbon is reduced.
C02F 1/40 - Dispositifs pour séparer ou enlever les substances grasses ou huileuses, ou les matières flottantes similaires
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
B01J 20/20 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant du carbone libreCompositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant du carbone obtenu par des procédés de carbonisation
The present application relates to the technical field of lithium battery positive electrode processing wastewater recovery and treatment. Disclosed are a lithium battery positive electrode processing wastewater recovery and treatment apparatus and method. The apparatus comprises: a collection unit, comprising a first storage tank and a second storage tank, the first storage tank being configured to store phosphorus-containing wastewater, and the second storage tank being configured to store lithium-containing wastewater; a reaction unit, comprising a pool body and a press filtration module, wherein the pool body comprises a reaction chamber and a precipitation chamber communicated with each other, a stirring module is mounted in the reaction chamber, a horizontally arranged filling material layer and a vertically arranged partition plate are mounted in the precipitation chamber, a side of the filling material layer is connected to the partition plate, the partition plate and the filling material layer divide the precipitation chamber into an upper region and a lower region, the press filtration module comprises a diaphragm pump and a filter press, and the lower region is communicated with the filter press by means of the diaphragm pump; and a test unit, comprising a pH meter, a flow meter, and a turbidity meter. According to the recovery and treatment apparatus and method of the present application, wastewater residues can be fully utilized and the costs of wastewater recovery are reduced.
The present disclosure belongs to the technical field of lithium batteries, and specifically relates to a manganese iron phosphate precursor, a lithium manganese iron phosphate positive electrode material, a preparation method, and a use. The present disclosure utilizes the feature of iron phosphate precipitation and aluminum phosphate precipitation having similar Ksp, first synthesizing aluminum iron phosphate by means of coprecipitation, and mixing the aluminum iron phosphate evenly, and then using a reaction between aluminum iron phosphate and manganese chloride to prepare a stable manganese iron phosphate precursor; aluminum chloride generated during the reaction can be directly volatilized. The synthesis route provided by the present disclosure can effectively solve the problem of a non-uniform manganese iron phosphate precursor caused by directly coprecipitating manganese phosphate and iron phosphate; the iron-manganese ratio of the prepared manganese iron phosphate precursor is closer to a target value, and the specific capacity and cycle performance of the lithium manganese iron phosphate then prepared using said precursor can be effectively improved. The entire process is simple and easy to operate, with low process costs, and has very good prospects for industrial application.
The present disclosure relates to the technical field of analytical chemistry, and in particular to a method for measuring the content of calcium fluoride in lithium iron phosphate hydrometallurgical waste residues. The method comprises: using citric acid to treat lithium iron phosphate hydrometallurgical waste residues to dissolve iron and aluminum in the waste residues, using the reducibility of the citric acid to reduce Fe3+into Fe2+ to avoid complexation with fluoride ions, and due to calcium fluoride being insoluble in the citric acid, separating iron and aluminum from the lithium iron phosphate hydrometallurgical waste residues by means of a solid-liquid separation method; and using inorganic strong acid to dissolve the solid material obtained after solid-liquid separation to obtain a solution under test, using a fluorine ion selection electrode to accurately measure the content of fluorine in said solution, and then calculating the content of calcium fluoride in the lithium iron phosphate hydrometallurgical waste residues. The measurement method provided by the present disclosure does not require the addition of iron and aluminum masking agents such as triethanolamine, has the advantages of involving simple and convenient operation and low costs, and can be used for quickly and accurately measuring the content of calcium fluoride in lithium iron phosphate hydrometallurgical waste residues on a large scale.
G01N 27/26 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables électrochimiquesRecherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en utilisant l'électrolyse ou l'électrophorèse
19.
LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD AND USE
23abc22 material, the removal of Li+22O is reduced, thereby reducing lattice oxygen removal, thus mitigating unstable Mn elements on the surface layer of the material due to oxygen removal, and reducing the formation of a low-capacity spinel structure, wherein x is greater than 0 and less than or equal to 1, a+b+c=1, a is greater than 0 and less than 1, b is greater than or equal to 0 and less than 1, and c is greater than 0 and less than 1. The presence of a fast ion conductor layer can also improve the ion diffusion rate in the lithium-rich manganese-based positive electrode material, thereby effectively improving the ionic conductivity of the lithium-rich manganese-based positive electrode material, improving the capacity, and improving the rate performance and cycling performance.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
20.
METHOD FOR MEASURING CHROMIUM CONTENT IN LATERITE-NICKEL ORE
The present invention relates to the technical field of detection and analysis. Disclosed is a method for measuring the chromium content in laterite-nickel ore. In the present invention, a standard addition method is used, that is, a matrix in a standard solution is similar to a sample matrix, and analysis parameters are reasonably selected, so that matrix effects of easily ionized elements and other elements can be suppressed or eliminated. That is, laterite-nickel ore is digested by using a simple, efficient and low-cost method integrating sodium peroxide alkali fusion, hot water leaching, and hydrochloric acid dissolution, and the ionization interference of ICP-OES is reduced by the standard addition method, so that current research and development requirements are met, and a fast and simple method is provided for subsequent batch testing.
G01N 21/73 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement en utilisant des brûleurs ou torches à plasma
Disclosed in the present invention are a salt lake lithium extraction device and method, belonging to the technical field of salt lake lithium extraction. The salt lake lithium extraction device comprises: a feed liquid tank, a cathode chamber, an anode chamber, an extraction tank and a boron removal tank, wherein the feed liquid tank, the cathode chamber, the anode chamber, the extraction tank and the boron removal tank are sequentially separated by exchange membranes, and the extraction tank is connected to a back extraction tank. In the present disclosure, by means of providing the extraction tank and the boron removal tank, formation of boric acid precipitation which affects lithium extraction is effectively avoided during the lithium extraction process, and moreover, boron removal reaction is carried out while lithium extraction is performed, such that brine does not need to be pretreated for boron removal, thus simplifying the process, and effectively improving the lithium recovery rate and the purity of lithium.
C22B 3/20 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation
C22B 3/38 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques contenant du phosphore
22.
COMPOSITE LITHIUM EXTRACTION ADSORBENT, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Provided in the present disclosure are a composite lithium extraction adsorbent, and a preparation method therefor and the use thereof. The composite lithium extraction adsorbent comprises a lithium extraction adsorbent and a modified oxygen evolution catalyst provided on the surface of the lithium extraction adsorbent, and the modified oxygen evolution catalyst comprises a sulfur-containing NiFe-LDH oxygen evolution catalyst. In the present disclosure, the lithium extraction adsorbent and the modified oxygen evolution catalyst are compounded to prepare the composite lithium extraction adsorbent, the composite lithium extraction adsorbent is electrified during the adsorption and lithium extraction process to ensure that OH-on the surface of the adsorbent is consumed, and also, the adverse effect of ClO- is eliminated, the alkalinity of the surface of the adsorbent is reduced, corrosion of the adsorbent is reduced, and the service life of the adsorbent is prolonged.
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
23.
DEVICE AND METHOD FOR EXTRACTING LITHIUM FROM SALT LAKE
Provided in the present disclosure are a device and method for extracting lithium from a salt lake. The device comprises a power supply, a lithium-extracting compartment, a lithium-removing compartment and an electrolyte compartment. The method comprises the following steps: (1) mixing a lithium-removing material and an electrolyte to prepare a lithium-removing flowing slurry, and mixing a lithium-intercalated material and lithium-containing salt lake brine to prepare a lithium-intercalated flowing slurry; (2) injecting an electrolyte into the electrolyte compartment, making the lithium-removing flowing slurry flow through the lithium-removing compartment, making the lithium-intercalated flowing slurry flow through the lithium-extracting compartment, and energizing same to carry out a lithium-extracting reaction; and (3) collecting the liquid flowing out of the lithium-extracting compartment, filtering same and then mixing same with the electrolyte, making the mixture flow through the lithium-removing compartment, continuing to carry out the lithium-extracting reaction, and collecting the liquid in the electrolyte compartment to obtain a lithium-rich solution. The device for extracting lithium from a salt lake of the present disclosure has a simple structure, and the method reduces the impurity-removing pressure of an ion exchange membrane and prolongs the service life of the ion exchange membrane; in addition, the obtained lithium-rich solution has a low impurity concentration, and the effect of impurity removal is better.
Disclosed are a lithium iron manganese phosphate, and a preparation method and the use thereof, belonging to the technical field of battery materials. Manganese ferrous phosphate is synthesized by using a coprecipitation method, and oxidized with chlorine gas. During the oxidation process, some ferrous ions are oxidized into trivalent iron, which reacts with chlorine gas to generate ferric chloride. With the volatilization of ferric chloride, the trivalent iron is removed, which forms channels available for lithium ion diffusion in manganese ferrous phosphate, thereby improving the diffusion rate of lithium ions, and forming a lithium iron manganese phosphate positive electrode material with a more stable structure and excellent performance.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
The present disclosure belongs to the field of lithium ore metallurgy. Provided in the present disclosure is a method for extracting lithium and aluminum from red mud and lithium chinastone. The method comprises: mixing lithium chinastone and red mud, subjecting the mixture to primary roasting, soaking same in water to obtain a soaked material, subjecting the soaked material to secondary roasting, subjecting the soaked material from the secondary roasting to primary leaching to obtain a leachate, and removing impurities from the resulting leachate to obtain an accepted lithium liquid product, and subjecting the resulting leaching residue to secondary leaching to obtain an aluminum solution with a high aluminum content, thereby achieving the extraction of both lithium and aluminum, and the effective separation thereof. In the method, the red mud, which is also industrial solid waste, is used as a raw material, and lithium is directly extracted from the lithium chinastone ore raw material; the method is simple and reliable, and has low production costs and a high lithium recovery rate reaching 98.7% or more, thereby facilitating large-scale industrialization; and the method uses a large amount of industrial solid waste, and is more environmentally friendly with considerable economic benefits.
A step-by-step recycling method for decommissioned lithium batteries. The method comprises the following steps: performing pre-processing on a decommissioned lithium battery, to obtain a powder; mixing the powder and a first organic acid, and performing a leaching reaction, to obtain a leachate containing lithium and aluminum, and a first leaching residue; mixing the first leaching residue and a composite ammonia source, and performing a leaching reaction, to obtain a copper-containing leachate and a second leaching residue; performing acid leaching on the second leaching residue, to obtain a solution containing nickel, cobalt, manganese and iron, and a third leaching residue; and mixing the solution containing nickel, cobalt, manganese and iron with a pH value regulator, performing a reaction, and aging, to obtain a solution containing nickel, cobalt, and manganese, and an iron precipitation residue. The method reduces the loss of valuable metal elements lithium, nickel, cobalt and manganese, and the output of slag; increases the recovery rate of metallic lithium; implements high-value utilization of copper and aluminum in the leaching solution; and reduces process production costs. In addition, reclamation and reduction of solid waste in a lithium battery wet recycling process is achieved.
C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p. ex. des rognures, pour produire des métaux non ferreux ou leurs composés
C22B 3/16 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions organiques
C22B 3/14 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques alcalines contenant de l'ammoniaque ou des sels d'ammonium
Disclosed are an electrode material for lithium extraction from salt lake, and a preparation method and a use thereof. The preparation method comprises the following steps: (1) heating an electrode active material, and mixing the heated electrode active material with an organic solvent to obtain a dispersion liquid; (2) mixing the dispersion liquid with an organic positive electrode coating agent, and implementing a heating reflux reaction; and (3) cooling a material obtained by the heating reflux reaction, and removing a supernatant after centrifugation to obtain an electrode material for lithium extraction from salt lake. In the present application, an organic positive electrode material coating layer is coated on the surface of an electrode material, so that the mechanical strength of an electrode can be improved, and the electrode has high lithium ion conductivity in the lithium extraction process while the electrode capacity is not reduced.
C22B 3/22 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
28.
LITHIUM EXTRACTION DEVICE AND LITHIUM EXTRACTION METHOD
Disclosed are a lithium extraction device and a lithium extraction method, relating to the technical field of lithium extraction. In the lithium extraction device, by providing a movable ionic membrane, the ionic membrane can be replaced or adjusted according to requirements, without replacing electrodes, so as to perform multiple adsorption and desorption processes. In this process, the ionic membrane does not need to be cleaned, thereby omitting cleaning water, and greatly saving energy consumption and costs. Moreover, in this process, intercalated and deintercalated electrodes do not need to be replaced back and forth, thereby improving the lithium extraction efficiency.
Disclosed is a method for recycling materials in waste batteries by means of full-chain integrated treatment, relating to the technical field of battery recycling. The method comprises: grafting a positive electrode sheet and a separator connected to the positive electrode sheet in a waste battery, so that the separator and a positive electrode binder for the positive electrode sheet are cross-linked by means of a graft; swelling the grafted material to reduce the bonding force between the positive electrode binder and a positive electrode current collector in the positive electrode sheet; and under the action of an external force, separating the positive electrode current collector from a positive electrode active material to which the separator is bonded. By means of the method, the positive electrode active material and the current collector in the waste battery can be effectively separated, and then the separated materials can be recycled.
A device and method for stripping aluminum foil and a positive electrode material of a waste lithium ion battery based on full-chain integration. The device for stripping the aluminum foil and the positive electrode material of the waste lithium ion battery based on the full-chain integration comprises: a freezing mechanism (110), a positive electrode sheet traction mechanism (120), a laser heating mechanism (140), a negative pressure mechanism (160), and a stripping chamber (130). The freezing mechanism (110) is disposed outside the stripping chamber (130) and is configured to freeze a positive electrode sheet (200) placed on the positive electrode sheet traction mechanism (120). The positive electrode sheet traction mechanism (120) passes through the stripping chamber (130). The laser heating mechanism (140) is located in the stripping chamber (130) and oriented toward the positive electrode sheet (200) on the positive electrode sheet traction mechanism (120). The negative pressure mechanism (160) is located in the stripping chamber (130) and is located below the positive electrode sheet traction mechanism (120). A scraper (131) is further disposed in the stripping chamber (130). The scraper (131) is disposed on an upper surface of the positive electrode sheet traction mechanism (120) and is in contact with the positive electrode sheet (200) to strip off the aluminum foil (201) and the positive electrode material of the positive electrode sheet (200). According to the device, the efficient separation of the positive electrode material and the aluminum foil is implemented, and the purity of a recycled material is increased.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B09B 3/30 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement mécanique
B09B 3/40 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement thermique, p. ex. évaporation
B09B 3/50 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un rayonnement, p. ex. des ondes électromagnétiques
31.
PREPARATION METHOD FOR FLAKY IRON PHOSPHATE AND PREPARATION METHOD FOR FLAKY LITHIUM IRON PHOSPHATE
Disclosed are a preparation method for flaky iron phosphate and a preparation method for flaky lithium iron phosphate. According to the present disclosure, electrical pulses are introduced during the preparation of iron phosphate, so that the reaction rate during iron phosphate synthesis can be controlled, and impurity ions entrained during iron phosphate precipitation can be reduced; in addition, flaky iron phosphate can be obtained, and then flaky lithium iron phosphate having good electrochemical performance is obtained; furthermore, the presence of the electrical pulses is beneficial to generating flaky iron phosphate having a smaller size and improving the density of iron phosphate, thereby improving the electrochemical performance of lithium iron phosphate which serves as a positive electrode material.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
32.
METHOD FOR EXTRACTING FLUORINE FROM NICKEL-COBALT-MANGANESE SULFATE SOLUTION
The present application relates to the field of wastewater treatment, and discloses a method for extracting fluorine from a nickel-cobalt-manganese sulfate solution. The method comprises the following steps: mixing a nickel-cobalt-manganese sulfate solution and concentrated sulfuric acid for activation; carrying out multi-stage countercurrent extraction on the activated liquid by means of an organic phase, wherein the organic phase comprises tributyl phosphate, isooctyl alcohol, and a diluent; carrying out multistage countercurrent washing on the fluorine-containing organic phase; and carrying out multi-stage countercurrent stripping on the washed fluorine-containing organic phase. According to the present application, for extraction of fluorine in a nickel-cobalt-manganese sulfate solution, tributyl phosphate is used as the extractant, and isooctyl alcohol is added to improve phase separation in a mixer-settler; the process steps are simple and the extraction rate is as high as 90% or above.
Doped cobaltosic oxide and a preparation method therefor. According to the method, a pre-oxidation process is used in combination with specific processing additives to prepare the product, such that the "sticking to a furnace" phenomenon can be effectively alleviated. In addition, the product prepared has high particle uniformity and is free of obvious cracking, a doping element has a gradient distribution, and a lithium cobalt oxide material prepared has good electrochemical performance. The method makes full-chain integrated production of doped cobaltosic oxide in the field of lithium batteries possible.
c1-dde2-ea1-bbf2-f2-f, the M element being a doping element, the Q element being a wrapping element, the T element being a doping element, and the E element being a wrapping element. By matching large and small particles of lithium cobalt oxide, an oxygen reduction reaction between an electrolyte and the surface of a positive electrode material can be inhibited, Co valence state changes in the positive electrode material are inhibited, Co dissolution is reduced, the capacity is increased, and the storage and gas production performance of a lithium cobalt oxide positive electrode material are improved.
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
35.
METHOD FOR PREPARING SODIUM HYDROXIDE ON BASIS OF SODIUM SULFATE WASTEWATER GENERATED DURING LITHIUM BATTERY RECOVERY
A method for preparing sodium hydroxide on the basis of sodium sulfate wastewater generated during lithium battery recovery. The method comprises the following steps: adding a calcium oxide powder to sodium sulfate wastewater, and mixing and reacting same, so as to obtain a mixed reaction solution; filtering the mixed reaction solution, so as to obtain a reaction mother solution; subjecting the reaction mother solution to a nanofiltration operation, so as to obtain a sodium hydroxide solution and a concentrated sodium sulfate solution; subjecting the sodium hydroxide solution to a reverse osmosis operation, so as to obtain the sodium hydroxide solution; subjecting the sodium hydroxide solution, which has undergone the reverse osmosis, to an electrodialysis operation, so as to obtain the sodium hydroxide solution; and subjecting the sodium hydroxide solution, which has undergone the electrodialysis, to an evaporation and concentration operation, so as to obtain the sodium hydroxide solution.
Disclosed are a method for synthesizing a ternary precursor under assistance of electric pulses and a use. According to the present disclosure, under the action of electric pulses, a coprecipitation reaction slows down the growth speed of a crystal nucleus without using a complexing agent, so that the obtained crystal grains are finer, and have higher sphericity; and the presence of the electric pulses in the aging process can also make the growth of the crystal grains more uniform and denser.
A fouled material treatment method. The method comprises: using sulfuric acid to carry out first leaching treatment on a fouled device to be treated; and using mixed acid to carry out second leaching treatment on the fouled device that has been subjected to the first leaching treatment, wherein the mixed acid comprises phosphoric acid and other acids, and the other acids do not contain any one of hydrochloric acid, nitric acid, oxalic acid, and hydrofluoric acid. The method consumes a short time, has a good fouled material removal effect and low cost, would not cause serious corrosion to devices, can implement recycling of leachates, and can be widely used for the cleaning of fouled materials in different devices.
A method for measuring the content of tricobalt tetraoxide in lithium cobalt oxide, relating to the technical field of quantitative measurement of tricobalt tetraoxide. The method comprises the following steps: carrying out acid treatment on a lithium cobalt oxide sample to be tested to dissolve lithium cobalt oxide, and then carrying out solid-liquid separation, reacting the solid obtained by separation with a potassium permanganate solution and a sulfuric acid solution, adding a potassium iodide solution to end the reaction, and titrating to an end point with a sodium thiosulfate solution by taking starch as an indicator. By means of the method, a measurement result having high accuracy can be obtained.
G01N 21/78 - Systèmes dans lesquels le matériau est soumis à une réaction chimique, le progrès ou le résultat de la réaction étant analysé en observant l'effet sur un réactif chimique produisant un changement de couleur
The present disclosure relates to the technical field of salt lake lithium extraction and recovery, and in particular to a method for extracting lithium from a salt lake by using a flow electrode, and a device for extracting lithium from a salt lake. By using a flow electrode slurry mixed with a lithium intercalation/deintercalation active material as a lithium ion electric deintercalation carrier, using a flow electrode slurry mixed with a calcium intercalation/deintercalation active material as a calcium ion electric deintercalation carrier, and incorporating an electrochemical principle, salt lake lithium extraction is carried out, and in the process of lithium intercalation, Ca2+and Mg2+ generate a competitive effect when entering a flow electrode, so that magnesium ions do not easily enter a lithium-intercalated slurry by means of an ion exchange membrane, thereby inhibiting the intercalation of the magnesium ions into the lithium intercalation/deintercalation active material; and in a lithium intercalation/deintercalation system, the electrode potential of calcium ions is significantly different from that of lithium ions, so that the calcium ions cannot be intercalated into the lithium intercalation/deintercalation active material. Therefore, the method provided by the present disclosure can effectively separate lithium and magnesium, thereby improving the purity of recovered lithium.
The present disclosure relates to the technical field of battery material preparation, and in particular to a preparation method for a large-particle cobaltosic oxide, comprising the following steps: mixing a cobalt salt solution with a carbonate-containing precipitant solution A, performing solid-liquid separation after reaction, taking solid phase substances, and drying and crushing to obtain amorphous nano cobalt carbonate; mixing a cobalt salt solution with a carbonate-containing precipitant solution B and a carbonate-containing precipitant solution C, generating cobalt carbonate particles after reaction, then adding the amorphous nano cobalt carbonate for reaction to obtain a reaction solution containing a cobalt carbonate matrix coated with the amorphous nano cobalt carbonate; and adding a hydroxyl-containing precipitant solution D into the reaction solution, adding the cobalt salt solution and the precipitant solution D, generating mixed particles after reaction, then performing solid-liquid separation, taking solid phase substances to obtain a cobalt carbonate/cobalt hydroxide mixture, performing primary sintering and then mixing with the amorphous nano cobalt carbonate, and performing secondary sintering to obtain a large-particle cobaltosic oxide.
A coated and modified lithium cobalt oxide, and a preparation therefor and the use thereof. By coating the surface of lithium cobalt oxide with Na, Ni, a rare earth metal and P, the cycling performance and initial efficiency of a lithium cobalt oxide positive electrode material can be improved under a relatively high voltage of 4.2 V or higher, and the comprehensive performance of the material can be improved; moreover, Na and the rare earth metal serving as dual pillars can maintain the structural stability of the surface layer of the material, and the synergistic effect of a sodium salt coating layer and a composite coating layer is more conducive to an improvement in the cycling performance of the material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 4/1391 - Procédés de fabrication d'électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
42.
NICKEL-COBALT-ALUMINUM TERNARY POSITIVE ELECTRODE MATERIAL PRECURSOR, AND PREPARATION METHOD THEREFOR AND USE THEREOF
The present application belongs to the technical field of lithium ion batteries. Disclosed are a nickel-cobalt-aluminum ternary positive electrode material precursor, and a preparation method therefor and the use thereof. The preparation method for the nickel-cobalt-aluminum ternary positive electrode material precursor comprises the following steps: (1) adding a nickel source, a cobalt source and an aluminum source into deionized water to prepare a mixed solution, adding a complexing agent and a precipitant into the mixed solution for a reaction, carrying out solid-liquid separation, and performing drying to obtain a solid product; and (2) adding the solid product into a modified graphene paste, and carrying out primary ball milling, hydrothermal reaction, secondary ball milling, drying and crushing to obtain the nickel-cobalt-aluminum ternary positive electrode material precursor, the modified graphene paste comprising the following components: a fluorine-containing silane coupling agent, a soluble boron-containing compound, a surfactant, graphene and absolute ethyl alcohol. The prepared nickel-cobalt-aluminum ternary positive electrode material precursor has good structural stability and consistency, thereby remarkably improving the electrical properties and cycle performance of lithium ion batteries.
The present application relates to the technical field of battery recovery. Disclosed is a method for recovering valuable metals from a lithium-ion battery. In the present application, waste rubber particles are used as a fuel and a reducing agent, and after the waste rubber particles and a lithium-ion battery electrode powder are mixed and granulated, primary roasting and pyrolysis and secondary roasting and pyrolysis are conducted; a gas generated by the waste rubber particles has a relatively high heat value, also has an extremely high reducibility, and can reduce a ternary lithium battery electrode powder into soluble lithium oxide; lithium metal can be recovered by means of water leaching, and therefore a metal recovery rate is high and the energy consumption is low; and since the waste rubber particles are used, the resource recycling rate can be increased, and the method is economical and environmentally friendly.
An integrated extraction system and a control method therefor. The integrated extraction system comprises at least an extraction tank and a controller, wherein a first speed reducer (3) for adjusting the stirring of a stirrer and a second speed reducer (6) for adjusting the vertical movement of an aqueous-phase regulating tube are at least mounted in the extraction tank, the stirrer being arranged in a mixing tank (4) of the extraction tank, and the aqueous-phase regulating tube being arranged in a clarification tank (5) of the extraction tank; and the controller is configured to obtain a feed flow rate of the extraction tank, solution information of the clarification tank (5), and the stirring frequency of the stirrer, and perform PID control over the feed flow rate, the stirring frequency, and the position of the aqueous-phase regulating tube on the basis of the feed flow rate, the solution information and the stirring frequency. In this way, it is possible to realize automatic control of the extraction tank, reduce the interference of human factors, and improve the production line stability.
METHOD FOR RECOVERING NICKEL, COBALT, MANGANESE, LITHIUM, AND NEGATIVE ELECTRODE GRAPHITE FROM TERNARY LITHIUM BATTERY BY MEANS OF HIGH-PRESSURE REDUCTION
A method for recovering nickel, cobalt, manganese, lithium, and negative electrode graphite from a ternary lithium battery by means of high-pressure reduction, comprising the following steps: carrying out low-acid leaching on waste battery powder, mixing low-acid leaching residues obtained after solid-liquid separation with an alkaline solution to make a slurry, carrying out high-pressure leaching on roasting residues obtained after primary roasting of the slurry, and carrying out secondary roasting on high-pressure leaching residues obtained after solid-liquid separation, thereby obtaining battery-grade graphite powder.
C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p. ex. des rognures, pour produire des métaux non ferreux ou leurs composés
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
The present invention provides a method for removing PVDF and aluminum from a lithium iron phosphate positive electrode material, comprising the following steps: S1: performing mixing and ball-milling on lithium iron phosphate powder, a first ionic liquid, and ethanol, and performing solid-liquid separation to obtain PVDF-removed lithium iron phosphate powder; and S2: mixing and heating alcohol, a second ionic liquid, and the PVDF-removed lithium iron phosphate powder prepared in step S1, and separating alcohol and aluminum alkoxide to obtain PVDF-removed and aluminum-removed lithium iron phosphate powder, wherein the first ionic liquid and the second ionic liquid in steps S1 and S2 are independently selected from a fluorine-containing ionic liquid.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
47.
METHOD FOR FULL-CHAIN INTEGRATED REGENERATION OF WASTE LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE SHEETS, AND REGENERATED LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE SHEET
A method for regeneration of waste lithium iron phosphate positive electrode sheets, and a regenerated lithium iron phosphate positive electrode sheet. By means of an electrochemical mode, the method enables lithium iron phosphate to be regenerated without any damage to the structure thereof; the method avoids the discharge of acid-alkali wastewater in large quantities during a wet recovery process, and also avoids the problem of reduced activity of lithium iron phosphate due to the lattice changes in the lithium iron phosphate caused by aerobic calcination during a pyrogenic recovery process; moreover, the process is simple, lithium iron phosphate does not need to be stripped from positive electrode sheets, a positive electrode sheet is directly obtained after regeneration, and a binder, a conductive agent, etc., in the positive electrode sheet do not need to be additionally replenished; and the performance of a regenerated lithium iron phosphate positive electrode material is equivalent to that of the initially prepared lithium iron phosphate positive electrode material.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
C25C 1/02 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions des métaux légers
48.
LITHIUM COBALT OXIDE POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
A lithium cobalt oxide positive electrode material, a preparation method therefor and the use thereof. The positive electrode material comprises large particles and small particles. The large particles have a lower content of nickel and manganese; a small amount of the nickel element increases the capacity and a small amount of manganese stabilizes the structure; the presence of nickel and manganese inhibits cobalt dissolution to a certain degree, thus improving battery storage; additionally, the slight doping of nickel and manganese enhances intrinsic properties and allows the large particles to normally grow, thus improving the compaction density of an electrode sheet and ensuring the compression resistance. The small particles have a higher content of nickel and manganese; since the small particles have a small size and a larger BET, small particles are likely to grow into quasi-single crystals, so that compared with the slight doping of nickel and manganese, the presence of higher amounts of nickel and manganese is more beneficial for improving the storage and gas generation properties while improving the battery capacity.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
An order-to-disorder transformed spinel phase lithium nickel manganese oxide material, a preparation method therefor and a use thereof. A matrix of the spinel phase lithium nickel manganese oxide material is primarily based on an ordered spinel phase, but the surface of the matrix is a surface layer primarily based on a disordered spinel phase. Moreover, there is also a doping element for increasing the degree of disorder and/or promoting single crystallization in the matrix. By introducing the doping element, the content of trivalent manganese in the matrix is increased, so that the internal degree of disorder is increased on the basis of the ordered spinel phase; moreover, single crystal particles of the order-to-disorder transformed spinel phase lithium nickel manganese oxide material are at the micron level, and said material has a small specific surface area and excellent capacity. The surface layer primarily based on the disordered spinel phase can further improve the capacity, cycle performance and rate capability of the order-to-disorder transformed spinel phase lithium nickel manganese oxide material, so that said material has great advantages in subsequent material coating. The order-to-disorder transformed spinel phase lithium nickel manganese oxide material can be widely used in preparation of lithium battery positive electrodes.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
50.
FULL-CHAIN INTEGRATED METHOD FOR RECYCLING LITHIUM FROM BATTERY AND STORING CARBON DIOXIDE
Disclosed herein is a full-chain integrated method for recycling lithium from a battery and storing carbon dioxide. The method comprises the following steps: carrying out electrochemical lithium extraction by using an electrolytic tank, and introducing a gas containing carbon dioxide and hydrogen fluoride into a cathode chamber solution of the electrolytic tank, such that a lithium fluoride precipitate is obtained in an anode chamber, and carbonate wastewater is obtained in the cathode chamber, wherein the electrolytic tank comprises a lithium-rich battery material anode, a lithium-deficient battery material cathode, a monovalent anion exchange membrane, the cathode chamber solution and an anode chamber solution, and the cathode chamber and the anode chamber are separated by using the monovalent anion exchange membrane.
A positive electrode material, and a preparation method therefor and the use thereof. The positive electrode material comprises a substrate material and a coating layer arranged on the surface of the substrate material, wherein a bulk phase of the substrate material is doped with metal M, the near-surface layer of the substrate material is doped with Na in a gradient decreasing mode from outside to inside, and the coating layer comprises a perovskite-structure oxide containing metal Me. The coating layer comprises Me, O and La elements, and a substrate is subjected to bulk phase and near-surface layer gradient doping by using doping elements of specific types and contents, and is subjected to surface coating by using perovskite, such that the problem of structure deterioration under high voltages can be solved, and the gas production of a battery can be improved.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
52.
LITHIUM ION BATTERY POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD AND USE
A lithium ion battery positive electrode material, a preparation method and the use. By means of adjustment and optimization of doping elements, the doping amount and the parameters of a preparation process, single crystal or single crystal-like particles are obtained, so as to reduce micro-cracks, and reduce side reactions at interfaces, thus obtaining a lithium-cobalt oxide having good storage performance, cycle performance and gas evolution performance at voltages of 4.50V or above and suitable for the field of power batteries.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
53.
SINGLE-CRYSTAL LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, AND BATTERY
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
Provided is a multi-component separation system for battery crushing and recycling. The system comprises: a first screening mechanism (1), which is used for pre-screening treatment of materials after high-temperature pyrolysis; a secondary crusher (2), which is connected to the first screening mechanism and used for initial crushing treatment of the materials that have been screened out by the first screening mechanism and do not meet the requirements; a second screening mechanism (3), which is connected to the secondary crusher and used for screening treatment of the materials that have been crushed by the secondary crusher; a fine crusher (4), which is connected to the second screening mechanism and used for fine crushing treatment of the materials that have been screened out by the second screening mechanism and do not meet the requirements; a third screening mechanism (5), which is connected to the fine crusher and used for screening treatment of the materials that have been crushed by the fine crusher; and a specific gravity separator (6), which is used for separation treatment of the materials that have been screened out by the third screening mechanism and do not meet the requirements. Further provided is a multi-component separation method for battery crushing and recycling. According to the multi-component separation system and method, through the cooperation of multi-stage screening and multi-stage crushing, the battery crushing and recycling utilization rate is effectively improved.
A CTP battery pack disassembly method, comprising: performing a pre-treatment operation on a CTP battery pack to remove an upper cover, an electric control module, and a shielding accessory; performing a discharge operation on the CTP battery pack after the pre-treatment operation on same has been completed; performing an automatic cut-off operation on a busbar connected between two adjacent battery cells in the CTP battery pack; performing a heating operation on a bottom portion of the CTP battery pack; performing a turnover operation on the CTP battery pack after the heating operation on same has been completed; and performing a vibration operation on the CTP battery pack after the turnover operation on same has been completed, to separate each battery cell from the inside of the CTP battery pack. The above-described CTP battery pack disassembly method enables the efficiency of disassembly by workers to be high during disassembly of a CTP battery pack, while also enabling good safety of the workers during disassembly of the CTP battery pack.
An underwater crushing and recovery system for lithium batteries, comprising a dual-shaft shredder (2). An inner cavity of the dual-shaft shredder (2) is located in a water reservoir (4), and the inner cavity of the dual-shaft shredder (2) is in communication with the water reservoir (4). The water reservoir (4) communicates with a circulating water tank by means of a circulating water pump (11). A material discharging position below the dual-shaft shredder (2) communicates with the circulating water tank by means of a first screw conveyor (3). In the system, lithium batteries are conveyed by means of a belt conveyor into the dual-shaft shredder to undergo preliminary crushing, during which the lithium batteries are covered in water, thereby avoiding the situation in which a large number of crushed particles go flying during crushing of the batteries, and effectively preventing the crushing process from polluting the environment in which processing equipment is located, which would in turn lead to affected environmental safety. Moreover, the crushing cavity of the dual-shaft shredder is arranged within the water reservoir, and dilution of an electrolyte solution with water in the water reservoir causes the batteries to fail, which avoids the generation of sparks from battery crushed particles and the combustion of same resulting from short-circuiting of some of the batteries during crushing, and which can effectively protect environmental safety.
A positive electrode material containing a nano aluminum oxide coating layer and a preparation method for the positive electrode material. The method comprises the following steps: adding an aluminum source and a carbon source into a solvent to obtain a dispersion system; adding a positive electrode material into the dispersion system, stirring and carrying out a reaction to obtain a gel; drying the gel and sintering in an inert atmosphere to obtain a precursor; and carrying out heat treatment on the precursor in an oxidizing atmosphere to obtain a positive electrode material containing a nano aluminum oxide coating layer.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/48 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques
H01M 4/46 - Alliages à base de magnésium ou d'aluminium
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
A fiber ball filter, comprising: a double-layer pressing plate assembly (3), comprising a first pressing plate (31) and a second pressing plate (32) arranged in sequence. First water-permeable holes (33) are formed in the first pressing plate (31), and second water-permeable holes (34) are formed in the second pressing plate (32). A lifting/lowering control assembly (4) is used for controlling the double-layer pressing plate assembly (3) to move up and down so as to be switched between a working position and a flushing position. The working position is the position of the double-layer pressing plate assembly (3) when a fiber ball filtering member is pressed, and the flushing position is the position of the double-layer pressing plate assembly (3) when the backwashing expansion rate of the fiber ball filtering member is a first preset proportion. A rotation control assembly (5) is connected to the first pressing plate (31), and controls the rotation to adjust the area of the overlapping portion of the first water-permeable holes (33) and the second water-permeable holes (34). According to the fiber ball filter, the backwashing effect of the fiber ball filtering member can be improved, the fiber ball filtering member is prevented from being damaged during backwashing, and the present invention solves the problems of fiber balls being prone to being bonded during lifting of the pressing plates after backwashing of the fiber ball filtering member, and non-uniform distribution of the fiber balls when the fiber ball filtering materials are pressed again.
B01D 24/04 - Filtres à substance filtrante non agglomérée, c.-à-d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent avec le lit filtrant stationnaire pendant la filtration la substance filtrante étant calée entre des parois perméables fixes
B01D 24/06 - Filtres à substance filtrante non agglomérée, c.-à-d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent avec le lit filtrant stationnaire pendant la filtration la substance filtrante étant calée entre des parois perméables fixes les parois perméables comprenant une série de jalousies ou de fentes
B01D 24/46 - Régénération de la substance filtrante dans le filtre
59.
DECOMMISSIONED-TRACTION-BATTERY SCREENING METHOD AND SYSTEM TAKING CARBON EMISSION INTO CONSIDERATION
Provided in the present invention are a decommissioned-traction-battery screening method and system taking carbon emission into consideration. The decommissioned-traction-battery screening method comprises: in response to an input operation of a client, acquiring the carbon emission of each decommissioned traction battery within a current boundary range before decommission; acquiring state-of-health parameters of the decommissioned traction batteries by means of charging and discharging; on the basis of the carbon emission and the state-of-health parameters, classifying the decommissioned traction batteries into several categories; and on the basis of the classification result, determining a disposal mode for each decommissioned traction battery, wherein the disposal mode comprises cascade use and dismantling for recycling. In the present application, state-of-health parameters and the carbon emission of decommissioned traction batteries are taken into consideration during a screening process, and on the basis of the state-of-health parameters and the carbon emission, the batteries are classified into categories, so as to advise the disposal mode of the batteries. Thus, the overall carbon emission of the batteries in the life cycle thereof can be effectively controlled, and the production of a relatively large amount of carbon emissions during the process of cascade use or dismantling for recycling is avoided.
A water-isolated and oxygen-free crushing device for lithium batteries, comprising a shredder (2) arranged in a water storage tank (1), a driving electric motor (21) for the shredder (2) being provided on the outer wall of the water storage tank (1), and the shredder (2) is located below a water level line of the water storage tank (1); and a discharging machine (3) arranged at the bottom in the water storage tank (1), the bottom of the water storage tank (1) being in communication with a circulating water tank by means of a conveying device (11). In the device, the shredder is arranged in the water storage tank, so as to prevent electrolyte from leaking and control the reaction of batteries by means of crushing wrapped in water. Batteries are shredded in water by means of the shredder, the shredded batteries are classified into sinking materials such as battery shells and tabs, and floating materials such as electrode plates and films, and the shredded materials can be delivered to the next process by means of a discharging machine; and the conveying device is also arranged at the bottom of the water storage tank to realize water circulation between the water storage tank and the circulating water tank, and some crushed slag materials can also be conveyed to the circulating water tank for sedimentation and separation.
B09B 3/30 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement mécanique
A method for improving cyclic rising of a battery, and a lithium ion battery. The method comprises: using a preset charging current to carry out constant-current constant-voltage charging on a battery to be tested until the voltage of said battery reaches a rated voltage, and the current of said battery reaches a target cutoff current (S110); and sequentially carrying out constant-current discharging on said battery twice, wherein a method for carrying out constant-current discharging on said battery comprises: standing said battery for a first preset duration; and when standing is finished, carrying out constant-current discharging on said battery until the voltage of said battery reaches a preset cutoff voltage (S120).
H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
62.
AEROGEL INTERFACIAL PHOTOTHERMAL EVAPORATION MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
An aerogel interfacial photothermal evaporation material, and a preparation method therefor and the use thereof. The aerogel interfacial photothermal evaporation material comprises graphene, a carbonized ternary precursor and oxide nanoparticles, wherein the graphene coats the surface of the carbonized ternary precursor, and the oxide nanoparticles are loaded on the surface of the carbonized ternary precursor coated with the graphene.
B01J 13/00 - Chimie des colloïdes, p. ex. production de substances colloïdales ou de leurs solutions, non prévue ailleursFabrication de microcapsules ou de microbilles
C09K 5/14 - Substances solides, p. ex. pulvérulentes ou granuleuses
C02F 1/14 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par chauffage par distillation ou évaporation utilisant l'énergie solaire
C02F 103/08 - Eau de mer, p. ex. pour le dessalement
63.
PREPARATION METHOD FOR AND USE OF IRON PHOSPHATE MATERIAL
44 material. By using a ferrate to oxidize organic phosphorus, the ferrate itself is reduced into ferric iron, and provides an iron source and also serves as an oxidizing agent; by introducing humic acid during the oxidation process, a competitive oxidation relationship with the organic phosphorus is formed; the ferrate is activated into an iron-based intermediate having higher oxidizability; and after the humic acid is oxidized, the electronegativity is enhanced, such that iron ions can be adsorbed to play a dispersing role, thereby preventing the generated iron phosphate from being agglomerated, such that the particle size thereof is uniform, which is conductive to improving the electrical properties of the subsequently prepared lithium iron phosphate.
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
64.
METHOD FOR RECYCLING POSITIVE ELECTRODE MATERIAL OF WASTE LITHIUM BATTERY BY MEANS OF HIGH-VOLTAGE PULSES
A method for recycling a positive electrode material of a waste lithium battery by means of high-voltage pulses. The method comprises: crushing a waste positive electrode sheet under the synergistic effect of high-voltage pulses and ultraviolet irradiation, wherein a positive electrode material in the waste positive electrode sheet comprises a positive electrode material matrix and a coating layer that is coated on the positive electrode material matrix, and the coating layer comprises titanium dioxide. As the waste positive electrode sheet is crushed by means of the synergism of high-voltage pulses and ultraviolet irradiation, the positive electrode material coated with titanium dioxide can be effectively stripped from a positive electrode current collector, and the stripping rate is significantly improved; and the content of aluminum in the stripped positive electrode material is very low.
A preparation method for a hard carbon negative electrode material. The method comprises the following steps: uniformly mixing a polymer material and a cross-linking agent, so as to obtain a mixture; placing the mixture in an oxygen-free environment and performing primary calcination, so as to obtain a precursor; placing the precursor in an oxygen-containing environment and performing secondary calcination, so as to obtain a modified precursor; and placing the modified precursor in an oxygen-free environment and performing third calcination, so as to obtain a hard carbon negative electrode material. By mixing the polymer material and the cross-linking agent, carrying out primary calcination to achieve cross-linking among polymers, carrying out secondary calcination to introduce an oxygen-containing functional group, and carrying out tertiary calcination and a pore closing treatment, the prepared hard carbon has a disordered interlayer structure, which is beneficial for the intercalation/deintercalation of sodium ions, thereby exhibiting a relatively high reversible capacity and first charge-discharge efficiency. The prepared hard carbon negative electrode material is further applied to a negative electrode of a sodium-ion battery.
A short-process lithium extraction method for a lithium clay ore. The method comprises the following steps: calcining the lithium clay ore to obtain a cured material; dissolving the cured material, concentrated sulfuric acid and an alkali metal sulfate in pure water to perform a hydrothermal reaction, and filtering same to obtain a leachate; adsorbing the leachate with a calcium-magnesium-removal resin column for impurity removal, so as to obtain an impurity-removed solution; and adding a saturated sodium carbonate solution to the impurity-removed liquid, and filtering same to obtain lithium carbonate filter residues. By means of a pressure leaching method, the lithium leaching rate is increased, and Al3+34222 (where X is Na or K). The alunite is insoluble in water and slightly soluble in sulfuric acid, has relatively good crystallinity, less adsorption entrainment of free ions, and almost no lithium entrainment. By using this characteristic of alunite, Al3+ dissolved out from the lithium ore by acid is converted into an alunite precipitate, thereby reducing the Al/Li ratio of the leachate; in addition, a small amount of calcium and magnesium ions are adsorbed by using the calcium-magnesium-removal resin, and finally lithium is collected in the form of lithium carbonate.
A method for preparing a modified nano-tricobalt tetraoxide. The method comprises the following steps: preparing a cobalt salt solution, an alkali solution and a sintering aid; introducing an inert gas into a reaction kettle to replace air in the reaction kettle, such that a reaction is performed in the inert atmosphere, adding the cobalt salt solution and the alkali solution, and mixing and reacting same, so as to obtain a nano-cobalt hydroxide slurry having a water content of 85-90 wt%; subjecting the nano-cobalt hydroxide slurry to filter pressing, so as to obtain a press-dried nano-cobalt hydroxide slurry having a water content of 60-70 wt%; drying the press-dried nano-cobalt hydroxide slurry, so as to obtain a dried nano-cobalt hydroxide slurry having a water content of less than 10 wt%; and oxidizing and crushing the dried nano-cobalt hydroxide slurry, and mixing and modifying same with the sintering aid, so as to obtain modified nano-tricobalt tetraoxide having a water content of less than 1 wt% and a D50 of less than 1 μm. The water content of the nano-cobalt hydroxide slurry is reduced in gradient by means of the two steps of filter pressing and drying; and the sintering temperature is reduced by taking the sintering aid as a catalyst.
The present invention belongs to the technical field of lithium battery preparation. Disclosed is a method for synthesizing a lithium manganese iron phosphate material coated with discontinuous vapor deposition carbon. The method for synthesizing the discontinuous vapor deposition carbon-coated lithium manganese iron phosphate material comprises the following steps: (1) preparing a precursor; (2) carrying out pre-sintering organic carbon coating; (3) carrying out rotary kiln vapor deposition carbon coating; and (4) carrying out crushing and sieving. In the method for synthesizing a lithium manganese iron phosphate material coated with discontinuous vapor deposition carbon, raw materials are selected to prepare a precursor, the precursor is then subjected to two-stage sintering of pre-sintering organic carbon coating and rotary kiln vapor deposition carbon coating, and same is then crushed and sieved to obtain a lithium manganese iron phosphate material coated with discontinuous vapor deposition carbon. The lithium manganese iron phosphate material coated with discontinuous vapor deposition carbon prepared by means of the present synthesis method has a compact and uniform coated carbon layer and has relatively good electronic conductivity.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
69.
METHOD FOR RECYCLING RAFFINATE ACID IN PROCESS OF WET-PROCESS PURIFICATION PHOSPHORIC ACID PRODUCTION
YICHANG BRUNP YIHUA NEW MATERIAL CO., LTD. (Chine)
Inventeur(s)
Wang, Wei
Wang, Hao
Ruan, Dingshan
Li, Changdong
Zheng, Haiyang
Ding, Daijun
Abrégé
The present disclosure belongs to the technical field of battery raw materials. Disclosed is a method for recycling raffinate acid in a process of wet-process purification phosphoric acid production. The method comprises: removing sulfur, fluorine, arsenic and heavy metals in raffinate acid to be treated, so as to obtain pretreated acid; pre-neutralizing the pretreated acid; then performing purification to obtain a purified liquid and precipitate residues containing iron, aluminum and magnesium; and rectifying the purified liquid to obtain industrial-grade phosphoric acid. The method can achieve effective recycling on the phosphorus resource in the raffinate acid, and the produced industrial-grade phosphoric acid can be used as a raw material to prepare battery-grade phosphates.
A method for recovering nickel and cobalt from a lateritic nickel ore. The method comprises the following steps: subjecting lateritic nickel ore to acid leaching, performing solid-liquid separation so as to obtain a leachate, and then sequentially removing iron, aluminum, calcium and magnesium in the leachate, so as to obtain a calcium-and-magnesium-removed solution; subjecting the calcium-and-magnesium-removed solution to adsorption with an ion exchange resin column for nickel adsorption, and then subjecting same to desorption and evaporative crystallization with sulfuric acid, so as to obtain nickel sulfate and adsorption raffinate; and subjecting the adsorption raffinate to adsorption with an ion exchange resin column for cobalt adsorption, and then subjecting same to desorption and evaporative crystallization with sulfuric acid, so as to obtain cobalt sulfate. The method has the advantages of simple process flow, relatively low production cost, stability and reliability.
C22B 3/42 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction utilisant l'échange d'ions
C22B 3/24 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques par adsorption sur des substances solides, p. ex. par extraction avec des résines solides
71.
SOLID ELECTROLYTE CONTAINING LITHIUM IRON PHOSPHATE COATING LAYER AND PREPARATION METHOD THEREOF
The present invention belongs to the field of solid electrolytes, and specifically relates to a solid electrolyte containing a lithium iron phosphate coating layer and a preparation method therefor. The preparation method comprises the following steps: mixing a lithium resource, a phosphorus resource, a reducing agent and a ferrous resource to obtain a mixed solution; and soaking a solid electrolyte ceramic sheet in the mixed solution for a hydrothermal reaction, so as to obtain a solid electrolyte containing a lithium iron phosphate coating layer.
H01M 10/0561 - Accumulateurs à électrolyte non aqueux caractérisés par les matériaux utilisés comme électrolytes, p. ex. électrolytes mixtes inorganiques/organiques l'électrolyte étant constitué uniquement de matériaux inorganiques
72.
BORON-DOPED POSITIVE ELECTRODE MATERIAL PRECURSOR, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A boron-doped positive electrode material precursor, and a preparation method therefor and a use thereof. According to the preparation method, a metal hydroxide raw material is directly mixed with a solution containing borate ions, and a heating reaction is implemented to obtain a boron-doped positive electrode material precursor. The method uses the characteristic that the surface and the internal pores of the metal hydroxide are rich in a large amount of active hydroxyl, to cause the metal hydroxide and the hydroxyl of the borate ions to generate weak interaction, thereby enhancing the uniform adsorption of the boron element on the surface and the internal pores, thus obtaining a precursor having an excellent boron doping effect, and avoiding boron salt residues caused by using a boron salt and a ball milling method. Compared with existing coprecipitation methods, the precipitation efficiency of the boron element is greatly improved, and the solution obtained by separation can be recycled as a solution containing borate ions. The boron-doped positive electrode material prepared by using the precursor has good capacity performance and excellent cycle performance.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
A method for removing fluorine from a waste lithium battery, comprising the following steps: disassembling a waste lithium battery, carrying out reduction and acid leaching, carrying out solid-liquid separation, and taking a liquid phase to obtain a leachate; carrying out copper removal and aluminum removal on the leachate to obtain an aluminum-removed liquid; adding sodium fluoride into the aluminum-removed liquid to precipitate lithium so as to obtain a lithium-precipitated liquid; and sequentially adding an oxidizing agent and an iron salt solution into the lithium-precipitated liquid, and standing to obtain a fluorine-removed liquid and fluorine removal residue.
Disclosed is a method for removing a manganese element in a nickel-cobalt-manganese-containing solution and a use thereof. A nickel-cobalt-manganese-containing solution is adjusted to be weakly acidic, part of manganese in the solution is oxidized, and then manganese is precipitated in the form of trimanganese tetraoxide; in addition, sodium silicate is used as a dispersant to inhibit further agglomeration or growth of trimanganese tetraoxide particles; and the recovery efficiency and purity of the manganese element are improved in combination with flotation, thereby facilitating the use of a nickel-cobalt-containing solution downstream, and obtaining nickel-cobalt products having higher quality.
Disclosed in the present invention is a vehicle-mounted battery crushing device, comprising a rotating mechanism; a number of feeding mechanisms, which are fixedly connected to the top of the rotating mechanism, wherein the feeding mechanisms are configured to feed batteries; a squeezing and piercing mechanism, which is fixedly connected to the bottom of the rotating mechanism; a crushing mechanism, which is fixedly connected to the bottom of the squeezing and piercing mechanism and configured to crush the batteries; and a battery shooting mechanism, which is fixedly connected to a surface of the squeezing and piercing mechanism, wherein a shooting end of the battery shooting mechanism extends into an inner cavity of the squeezing and piercing mechanism. The technical problem to be solved by the present invention lies in that it is not convenient for the existing vehicle-mounted battery crushing device to automatically feed batteries to be crushed during usage, when too many materials exist in the crushing device, effective crushing cannot be performed, internal blockage of the crushing device is caused, and the working reliability of the crushing device is reduced.
The present invention relates to the technical field of carbon emissions, and in particular relates to a method and a system for quantitative analysis of carbon emissions based on power battery recycling. The method comprises: sampling battery recovery processing data of each stage of power battery recycling at specific sampling intervals during a sampling period; extracting the battery recovery processing data at each stage of power battery recycling, to obtain a corresponding time-quantized feature; conducting an influencing factor analysis on the time-quantized features, to obtain a key influencing factor for carbon emissions; and obtaining quantitative information of power battery carbon emissions according to the key influencing factor for carbon emissions and time-quantized features. In the invention, by means of performing quantitative processing on a battery recycling processing data at various stages of power battery regeneration utilization, a comprehensive and accurate analysis of carbon emission in the regeneration utilization process is achieved. Furthermore, quantitative information on power battery carbon emissions is optimized and adjusted on the basis of reinforcement learning, thereby increasing the accuracy of quantification of carbon emissions.
Disclosed is a method for short-range recovery of a valuable metal from a waste ternary lithium battery. By means of the steps of nickel and cobalt precipitation by a two-stage chemical precipitation method and trisodium phosphate-based lithium precipitation, the problem in the prior art of high content of impurities in lithium carbonate is solved and high-quality lithium carbonate is obtained; in addition, the whole process is carried out in a normal pressure environment. Compared with the complex process of recovering nickel, cobalt, and manganese metals by an extraction + MVR evaporative crystallization method and recovering a lithium metal after MVR concentration, the demand of a waste ternary lithium battery recovery process for energy consumption and the pollution of the waste ternary lithium battery recovery process to the environment are greatly reduced, and industrial production is facilitated.
Disclosed are a double-coated lithium-rich manganese-based positive electrode material, a preparation method and a use. According to the double-coated lithium-rich manganese-based positive electrode material, the surface of a lithium-rich manganese-based positive electrode material is firstly coated with metal oxide to form a first coating layer, the chemical stability of the oxide is relatively good, and a coated sample structure is not prone to being corroded and damaged; and then the first coating layer is coated with one or more of fluoride, oxide and phosphate to form a second coating layer, wherein the fluoride, oxide and phosphate can enter lattices of the lithium-rich manganese-based positive electrode material and occupy oxygen vacancies to inhibit oxygen precipitation.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
80.
CARBON EMISSION MONITORING METHOD AND SYSTEM FOR BATTERY RECYCLING, DEVICE, AND MEDIUM
The present invention provides a carbon emission monitoring method and system for battery recycling, a device, and a medium. The method comprises: inputting acquired scrap information of a lithium battery to be recycled into a pre-constructed scrap classification model for classification prediction to obtain a scrap type; on the basis of the scrap type, determining an optimal recovery method and performing recovered carbon emission prediction on said lithium battery to obtain a carbon emission monitoring target value; performing recycling treatment on said lithium battery according to the optimal recovery method, and on the basis of the acquired actual carbon emission and actual economic revenue from recycling which correspond to each process step, obtaining the actual total carbon emission in recycling and the actual total economic revenue from recycling; and on the basis of the actual total carbon emission in recycling and the actual total economic revenue from recycling in combination with the carbon emission monitoring target value, evaluating the carbon emission in the recovery process of said lithium battery to obtain a carbon emission evaluation result. According to the present invention, a universal carbon emission monitoring method can be provided for lithium battery recovery, and comprehensive and accurate integrated monitoring and scientific and reasonable evaluation of carbon emission in the lithium battery recovery process can be realized.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
82.
MAGNETIC FLOTATION COLUMN AND METHOD FOR RECYCLING SPENT LITHIUM BATTERIES
Disclosed in the present disclosure are a magnetic flotation column and a method for recycling spent lithium batteries. On the basis of the differences between graphite and a positive electrode powder in terms of specific gravity, wettability and magnetism, a flotation column having a magnetic field is applied to the separation of graphite and a positive electrode powder in black mass of a battery, which is conducive to achieving rapid and thorough separation of the graphite and the positive electrode powder and producing a graphite concentrate which can be directly graphitized, thereby reducing chemical costs, and improving the quality of the graphite concentrate.
abcd22, wherein 0.1≤a≤0.8, 0.1≤b≤0.8, 0.1≤c≤0.8, 0.02≤d≤0.5, and a+b+c+d=1. The nickel-iron-manganese-copper precursor is granular, and has a sulfur content of no more than 1,200 ppm, a specific surface area of no more than 50 m 2/g, and a tap density of not less than 1.25 g/cm3.The preparation of the precursor comprises: mixing an intermediate precursor with an antioxidant, a complexing agent and a precipitant to carry out deep coprecipitation and preliminary desulfurization treatment, wherein the intermediate precursor is obtained by preliminarily co-precipitating a nickel-iron-manganese-copper mixed metal sulfate solution and a precipitant according to a preset molecular formula of the precursor. The method involves simple operations, and can obtain a nickel-iron-manganese-copper precursor having low sulfur content and good particle morphology. The precursor can be further used for preparing a positive electrode material and a battery.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
Disclosed are a battery full-process crushing, sorting and recycling system and method. The recycling system comprises a feeding system (1), an oxygen-free shredding system (2), a low-temperature drying system (3), a pre-sorting system (4), a high-temperature pyrolysis system (5), multiple screening and sorting systems (6), a deep processing system (7), a tail gas treatment system, a fire protection system and a control system. The present system uses multi-stage black mass collection, which is different from conducting screening and collection in the final stage, as in the prior art. The content of black mass impurities obtained by means of multi-stage collection is lower, the purity of each type of material is higher, and the recovery value is higher. The oxygen-free shredding system is used to perform two-stage pre-crushing of materials in an oxygen-free environment, to reduce the risk of fire. An entire battery can be crushed, which is different from manual breaking open of a battery in the prior art. The crushing is carried out only after the electrolyte is released. The oxygen-free crushing processing used is more environment-friendly, safe and efficient.
B09B 3/40 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement thermique, p. ex. évaporation
An electrode for extracting lithium from a salt lake and a preparation method thereof, belonging to the field of electrode technology, comprising a current collector and a coating distributed on at least one surface of the current collector. The coating comprises n regions arranged along the same center point and formed in sequence from the inside to the outside, the region closest to the center point of the coating is the first region (101), the region farthest from the center point of the coating is the nth region, wherein, the average porosity of the coating decreases from the first region (101) to the nth region, and the average porosity difference between any two adjacent regions is 1% to 20%. The electrode can effectively improve the purity of recovered lithium.
The present invention provides a method for preparing iron phosphate from ferrophosphorus slag. The method comprises the following steps: (1) pretreating ferrophosphorus slag to obtain a mixture containing aluminum phosphate; (2) mixing the mixture with chloride, roasting to obtain roasted slag, after washing and filtering, mixing the roasted slag with an acid solution, and after reaction, performing solid-liquid separation to obtain a solution A; (3) mixing the solution A with elemental iron, after reaction, carrying out solid-liquid separation to obtain a solution B, and adding an iron source and/or a phosphorus source to adjust a molar ratio of phosphorus to iron to obtain a raw material solution; and (4) mixing the raw material solution with hydrogen peroxide, adjusting the pH value for reaction, carrying out solid-liquid separation to obtain iron phosphate dihydrate, and carrying out sintering treatment to obtain iron phosphate. The method of the present invention can realize deep removal of Al and Cu impurities, thereby preparing high-purity iron phosphate; and the method has a simple process and relatively low costs.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
88.
FULL-CHAIN INTEGRATED COMBINED SALT LAKE LITHIUM EXTRACTION AND AMMONIA PRODUCTION METHOD
The present disclosure provides a full-chain integrated combined salt lake lithium extraction and ammonia production method, the method comprises the following steps (1) using a lithium-rich electrode as an anode and a first carbon electrode as a cathode, injecting an electrolyte to perform discharge treatment to obtain a lithium-poor electrode; (2) using the lithium-poor electrode as a cathode and a second carbon electrode as an anode, placing them in a salt lake brine to perform one-step constant voltage electrolysis to obtain a lithium-embedded electrode; (3) using the lithium-embedded electrode as an anode and a porous carbon electrode as a cathode, separating the same using a diaphragm, injecting an organic purification liquid, continuously introducing nitrogen into the organic purification liquid of the cathode, and performing two-step constant voltage electrolysis; (4) taking out the porous carbon electrode and placing it in water, reacting to obtain a lithium-rich solution, collecting the gas, and obtaining ammonia. The method described in the present disclosure can obtain ammonia while obtaining a lithium salt solution with low impurities, thereby improving the production value of a salt lake lithium extraction process.
A recycling control method and apparatus for a battery, a movable recycling method and apparatus for a battery, and a battery recycling system. The recycling control method for a battery comprises: acquiring a first performance parameter of a battery, second location information of the battery, and first location information of a movable recycling apparatus (S110); predicting retirement information of the battery according to the first performance parameter of the battery (S120); planning a recycling route of the battery according to the retirement information and second location information of the battery and the first location information of the movable recycling apparatus (S130); and according to the recycling route of the battery, controlling the movable recycling apparatus to recycle the battery according to the recycling route (S140).
Disclosed in the present invention are an electrochemical directional circulation-based deintercalation and intercalation balance method and apparatus in lithium extraction, a device, and a medium. The method comprises: performing deintercalation and intercalation in lithium extraction on the basis of working index parameters set for an electrolytic cell, and calculating a lithium deintercalation duration required by a lithium intercalation tank electrode plate; inputting the working index parameters into a pre-trained lithium intercalation duration calculation model, and outputting a lithium intercalation duration corresponding to complete lithium intercalation; calculating a duration difference on the basis of the lithium deintercalation duration and the lithium intercalation duration, inputting the duration difference and the working index parameters into a pre-trained reducing agent calculation model, and outputting a reducing agent dosage required by the lithium intercalation tank electrode plate; and controlling the balance of lithium intercalation and lithium deintercalation on the basis of a reducing agent of the required reducing agent dosage. The deintercalation and intercalation rate in lithium extraction can be balanced, and the lithium extraction efficiency is improved.
The invention belongs to the field of lithium-ion batteries. Provided are a ternary material precursor and a ternary material prepared therefrom. By limiting several parameters of the ternary material precursor, including the specific surface area thereof, the peak intensity ratio I001/I101 of crystal diffraction characteristic peaks, the length-width ratio of whiskers, the true density and the internal porosity, higher quality stability and electrochemical performance can be obtained when the ternary material precursor is subsequently used for preparing a ternary material, especially a single-crystal ternary material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
92.
MOISTURE-RESISTANT POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
1+axyza2bf22, and the outer coating layer comprises R. The material provided in the present application has good moisture resistance and electrochemical performance, and can be widely applied to the preparation of batteries.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
93.
ELECTRODE AND PREPARATION METHOD THEREFOR, DEVICE FOR EXTRACTING LITHIUM FROM SALT LAKE, AND METHOD FOR EXTRACTING LITHIUM FROM SALT LAKE
The present disclosure belongs to the technical field of extraction of lithium from a salt lake, and particularly relates to an electrode and a preparation method therefor, a device for extracting lithium from a salt lake, and a method for extracting lithium from a salt lake. The surface of an electrode matrix is modified by using an amphoteric diblock copolymer, so as to form a diblock copolymer coating layer; and the amphoteric diblock copolymer contains both a hydrophilic block and a hydrophobic block, wherein the hydrophobic block is easily adsorbed on the surface of the electrode matrix to form a stable coating, and the hydrophilic block can improve the hydrophilicity of the electrode and can also complex lithium ions on the surface of the electrode, thereby improving the lithium extraction efficiency.
The present disclosure provides a porous lithium-poor electrode, a preparation method therefor, and a use thereof. The preparation method comprises the following steps: (1) mixing an electrode active material, manganese dioxide, a conductive agent, a binder, and a solvent to obtain a slurry, and coating the slurry onto a surface of a current collector to obtain a lithium-rich electrode; (2) using the lithium-rich electrode as a positive electrode and an AgCl electrode as a negative electrode, adding a first electrolyte solution, and carrying out a first step of constant voltage treatment to obtain a lithium-poor electrode; and (3) using the lithium-rich electrode as a positive electrode and the lithium-poor electrode as a negative electrode, adding a second electrolyte solution, and carrying out a second step of constant voltage treatment to obtain the porous lithium-poor electrode. The voltage of the second step of constant voltage treatment is 1.5-2.5 V. The porosity of the interior of the porous lithium-poor electrode of the present disclosure is controllable, the mass transfer effect in the electrode is high, and the lithium extraction performance is good.
The present disclosure belongs to the technical field of lithium batteries, and specifically relates to lithium tungstate, and a preparation method therefor and the use thereof. In the present disclosure, lithium hydroxide, a tungsten source and an easily decomposable ammonium salt are used as raw materials, and heat generated in a reaction process is absorbed by utilizing the characteristic of the ammonium salt being easily decomposed with heat; therefore, a thermal field can be uniformly distributed in the reaction process, preventing morphological changes of lithium tungstate caused by local overheating, and nano-scale cubic-phase lithium tungstate can be prepared by means of a solid-phase reaction at normal temperature. Compared with a conventional high-temperature solid-phase method, the preparation method provided in the present disclosure does not require high-temperature conditions, the energy consumption involved therein is significantly reduced, and same is suitable for industrial mass production.
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
96.
LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD AND APPLICATION THEREOF
The present disclosure belongs to the field of lithium battery technology, and specifically relates to a lithium-rich manganese-based positive electrode material, and a preparation method and an application thereof. By means of performing surface oxidation of a dried lithium-rich manganese-based precursor and by means of precisely controlling the oxidation temperature and time, the manganese element can achieve a shallow oxidation effect, during a sintering process with a lithium salt, a layer of spinel structure can be formed on the surface of the material, the spinel structure has a three-dimensional lithium ion diffusion channel, and the channel can accelerate the transmission rate of lithium ions and can effectively improve the electrochemical performance of the material.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/1391 - Procédés de fabrication d'électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
H01M 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
The present disclosure belongs to the technical field of recycling of spent batteries. Disclosed is a method for full-chain integrated treatment of spent ternary lithium batteries. The method comprises the following steps: subjecting black mass in a spent ternary lithium battery to be treated and a reducing agent to first roasting, so as to obtain a first roasted product; subjecting the first roasted product to a lithium extraction treatment, and subjecting lithium-extracted residues obtained by means of the lithium extraction treatment to magnetic separation; subjecting a non-magnetic material obtained by means of the magnetic separation to first acid leaching and solid-liquid separation, so as to obtain first acid leaching residues; subjecting the first acid leaching residues to second roasting, so as to obtain a second roasted product; and subjecting graphite in the second roasted product to flotation. The method can at least efficiently recycle graphite in spent ternary lithium batteries, thereby avoiding the wasting of resources.
C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p. ex. des rognures, pour produire des métaux non ferreux ou leurs composés
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
The present disclosure relates to the field of lithium-ion batteries. Disclosed is a method for reducing residual alkali on the surface of a high-nickel positive electrode material. The method comprises the following steps: uniformly stirring and mixing a gel containing polyethylene oxide and high-nickel positive electrode material particles, standing, and performing centrifugal separation to obtain a high-nickel positive electrode material and a lithium complex gel. According to the present disclosure, the gel containing polyethylene oxide is mixed with the high-nickel positive electrode material, residual alkali is efficiently removed by using polyethylene oxide having the property of complexing lithium ions, the process does not cause damage to the interior of high-nickel positive electrode material particles, the operation is simple, the gel can be subsequently recycled, and harmless treatment of a product is realized.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
99.
ELECTRODE ACTIVE MATERIAL COATED WITH SOLID-STATE ELECTROLYTE LAYER, AND PREPARATION METHOD THEREFOR AND USE THEREOF
The invention relates to the technical field of extraction of lithium from a salt lake. Disclosed are an electrode active material (1) coated with a solid-state electrolyte layer (2), and a preparation method therefor and the use thereof. The structure of the electrode active material (1) coated with the solid-state electrolyte layer (2) is a core-shell structure, wherein a core structure is composed of the electrode active material (1), and a shell structure is composed of the solid-state electrolyte layer (2); and the solid-state electrolyte layer (2) is formed by complexing polyethylene oxide, which is doped with inorganic nanoparticles, with a lithium salt, and has good lithium ion conductivity. The electrode active material (1) coated with the solid-state electrolyte layer (2) is used for preparing an electrode for extraction of lithium from a salt lake, and the obtained electrode for extraction of lithium from a salt lake has better lithium extraction efficiency, cycling stability and lithium extraction capacity.
C22B 3/22 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
100.
TERNARY POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A ternary positive electrode material, and a preparation method therefor and a use thereof. The preparation method for the ternary positive electrode material comprises the following steps: (1) mixing a ternary precursor and a lithium source, and carrying out first-stage sintering treatment to obtain a first-stage sintered material; and (2) crushing the first-stage sintered material obtained in step (1), mixing the crushed first-stage sintered material with titanium dioxide, carrying out second-stage sintering treatment on a mixture of the first-stage sintered material and the titanium dioxide under illumination, and oxidizing divalent nickel into trivalent nickel to obtain the ternary positive electrode material. In the preparation process of the ternary positive electrode material, divalent nickel can be oxidized into trivalent nickel under the assistance of illumination while trivalent nickel is inhibited from being converted into divalent nickel, thereby reducing the nickel-lithium mixed arrangement of the material.
brevets
