A positive electrode material for a sodium-ion battery, and a preparation method therefor and the use thereof. The preparation method comprises: mixing an M source and a sodium source, and then sequentially subjecting same to primary sintering, a carbonization treatment, a high-entropy coating treatment and a secondary sintering treatment, so as to obtain a positive electrode material for a sodium-ion battery, wherein the M source is an M-containing compound, and M is selected from a combination of any three or more of Ni, Mn, Cu, Fe, Co, Ti, Mg, B, Al, Zn and Ca. The preparation method is simple to operate, and the obtained positive electrode material for a sodium-ion battery has the characteristics of a low surface alkalinity, few impurities, round and smooth morphology and a small specific surface area; and a battery prepared therefrom has a high capacity and good cycling stability.
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
2.
SILICON-CARBON NEGATIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A silicon-carbon negative electrode material, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a silicon source, a carbon source, and a binder with a solvent, and carrying out spray drying to obtain silicon-carbon composite particles; (2) pre-polymerizing 1,3,5-tris(4-aminophenyl)benzene, terephthalaldehyde, and benzenetricarboxaldehyde, mixing with the silicon-carbon composite particles obtained in the step (1), and reacting to obtain a precursor; and (3) carrying out high-temperature carbonization treatment on the precursor to obtain a silicon-carbon negative electrode material. The silicon-carbon negative electrode material prepared by the method has good conductivity and good rate performance, and keeps the particle size unchanged in the cycle process, so that fall-off of the electrode sheet and powdering thereof can be avoided in the cycle process to a great extent, and thus the cycle performance is stable.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
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 4/38 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'éléments simples ou d'alliages
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
3.
RECYCLING METHOD FOR LITHIUM IRON PHOSPHATE LEFTOVER MATERIAL
The present application relates to the technical field of material recycling, and discloses a recycling method for a lithium iron phosphate leftover material. According to the method, for the current lithium iron phosphate leftover material, vacuum pre-calcination is first used to effectively separate lithium iron phosphate from a current collector and a binder, and oxidation of the lithium iron phosphate is not caused; then specific ultrasound-assisted liquid-phase separation is used to effectively extract the lithium iron phosphate, high-recycling-rate recycling of the lithium iron phosphate can be achieved after subsequent treatments such as crushing and calcination, and the purity of a recycled product is high. The recycling method involves low energy consumption, is environmentally-friendly and does not generate secondary pollutants. The recycled lithium iron phosphate prepared by means of the recycling method has high purity and good quality, can be directly applied to preparation of a positive electrode sheet of a lithium-ion battery, demonstrates comparable electrochemical performance to a commercial new lithium iron phosphate material, and extremely conforms to the integrated concept of recycling and reutilization in the lithium iron phosphate industry.
A composite iron phosphate and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a tin source and a template agent with a first solvent, heating and stirring to obtain a spinning solution, and carrying out electrostatic spinning treatment and then sintering to obtain hollow nanofiber tin dioxide; and (2) mixing the hollow nanofiber tin dioxide, a ferrous source and a phosphorus source with a second solvent, adjusting the pH while carrying out light treatment, aging and then calcining to obtain the composite iron phosphate. According to the method, tin dioxide of a hollow nanofiber structure is introduced, the tin dioxide is irradiated with ultraviolet light to generate free radicals having strong oxidizing abilities on the surface of the tin dioxide, ferrous iron is oxidized into ferric iron, and the pH is adjusted for co-precipitation to form a tin dioxide composite iron phosphate material; additionally, the introduction of the tin dioxide is beneficial to improving the electrical properties of lithium batteries.
A composite ternary positive electrode material, a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a mixed salt solution of a calcium salt and a tin salt with an alkali solution to obtain a mixed solution; (2) mixing a ternary precursor with the mixed solution, performing solid-liquid separation to obtain a solid material, slurrying the solid material, and then adding hydrofluoric acid to undergo a reaction to obtain a composite ternary precursor; and (3) mixing the composite ternary precursor with a lithium source and performing sintering treatment to obtain the composite ternary positive electrode material. Alkali washing using the alkali solution containing tin and calcium can not only remove sulfur impurities but can also dope the precursor with calcium and tin; furthermore, after modification using hydrofluoric acid to generate fluoride, an oxide can be isolated from an electrolyte solution, reducing side reactions in the charging and discharging process, so that the cycling performance of the material is significantly enhanced.
Ferric phosphate, a preparation method therefor, and the use thereof. The preparation method comprises the following steps: (1) performing corona discharge treatment on nanocellulose, and mixing same with water and an organic acid so as to obtain an esterified nanocellulose dispersion liquid; (2) mixing the esterified nanocellulose dispersion liquid with an oily solvent, and performing emulsification treatment to obtain an emulsion; (3) mixing a ferric salt solution with the emulsion, performing first stirring, adding a phosphate solution, adjusting the pH value of the mixed solution, performing second stirring, and performing sintering to obtain ferric phosphate. The present invention forms emulsion spheres from charged nanocellulose, directionally attaches metal cations to the surface of the nanocellulose, and finally reacts same with phosphate ions so as to obtain ferric phosphate crystals having good dispersity, thereby lowering the difficulty of crushing agglomerated ferric phosphate.
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
B82Y 40/00 - Fabrication ou traitement des nanostructures
7.
MODIFIED IRON PHOSPHATE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Modified iron phosphate, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing starch and water to obtain a starch suspension, injecting the starch suspension, an iron source solution and a phosphate solution into a reaction device in a parallel flow manner, controlling the pH value in the system to perform a first-step reaction, and performing solid-liquid separation, so as to obtain a precipitate; (2) mixing the precipitate with an amylase solution, and heating same to perform a second-step reaction, so as to obtain a precursor; and (3) sintering the precursor, so as to obtain modified iron phosphate. By introducing starch during the co-precipitation process of iron phosphate, the starch is continuously and slowly hydrolyzed under acidic conditions and is then thoroughly hydrolyzed by means of amylase, and finally, iron phosphate of a porous hollow structure is spontaneously synthesized after the complete hydrolysis thereof, thereby shortening the diffusion path of lithium ions and improving the electrical properties.
Disclosed is a method and device for screening an echelon-use battery. The method includes: collecting a first initial voltage and a first voltage change data of a standard battery of the same batch as a test battery; acquiring a first voltage difference data; acquiring an allowable echelon-use voltage difference range corresponding to the first initial voltage according to the first initial voltage, the first voltage difference data and an allowable echelon-use deviation; collecting a second initial voltage and a second voltage change of the test battery, acquiring a second voltage difference data, when the second initial voltage and the first initial voltage are the same, determining whether the second voltage difference data falls within the allowable echelon-use voltage difference range, the test battery is qualified if the second voltage difference data falls into the range.
G01R 31/392 - Détermination du vieillissement ou de la dégradation de la batterie, p. ex. état de santé
G01R 31/3835 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p. ex. état de charge ne faisant intervenir que des mesures de tension
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
9.
LITHIUM PHYTATE, PREPARATION METHOD THEREFOR, AND USE THEREOF IN POSITIVE ELECTRODE MATERIAL
Provided in the present disclosure are lithium phytate, a preparation method therefor, and the use thereof in a positive electrode material. The preparation method comprises the following steps: mixing a phytic acid solution with a lithium source for reaction, adjusting the pH value, and drying same to obtain lithium phytate. Provided in the present disclosure is the lithium phytate preparation method, which involves a simple process, high operability and mild reaction temperature conditions, and which is relatively environmentally-friendly. Pre-preparation of lithium phytate can prevent material structural damage caused by corrosion due to directly applying phytic acid solutions to positive electrode materials, and also can avoid introduction of other alkali metal cations, thereby eliminating adverse effects on positive electrode materials. In addition, using the prepared lithium phytate as a water washing additive to perform water washing and coating on positive electrode materials can effectively reduce residual alkalis on the surfaces of the positive electrode materials, thereby improving the electrochemical properties of the positive electrode materials.
C07F 9/117 - Esters des acides phosphoriques avec des alcools cycloaliphatiques
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
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
10.
DRT-BASED HIGH-VOLTAGE PULSE SEPARATION AND RECOVERY DEVICE FOR POSITIVE ELECTRODE PLATE AND TREATMENT METHOD
Disclosed in the present application is a DRT-based high-voltage pulse separation and recovery device for a positive electrode plate and a treatment method. The DRT-based high-voltage pulse separation and recovery device for a positive electrode plate is sequentially provided with a storage area, a feeding area, a treatment area, and a recovery area, wherein a first conveying mechanism is provided in the feeding area, a feeding mechanism is provided between the storage area and the feeding area and is able to place a positive electrode plate in the storage area on the first conveying mechanism, a reaction tank having a top opening and filled with a solution is provided in the treatment area, a base is provided in the reaction tank and part of the base extends through the opening and is located outside the reaction tank, and the first conveying mechanism can convey the positive electrode plate to the base to realize automatic feeding; a pressing plate and an energization portion are provided above the reaction tank, the pressing plate is lower to enable the energization portion to abut against the positive electrode plate and presses the base into the solution, so as to apply a pulsed current to a current collector in the solution to disperse a positive electrode material into the solution; and a second conveying mechanism is provided on the base, and the second conveying mechanism can convey the current collector to the recovery area, realizing separation and recovery of the positive electrode plate.
The present disclosure belongs to the technical field of recovery of lithium-ion batteries, and particularly relates to a DRT-based treatment method for waste batteries. The treatment method comprises the following steps: (1) discharging a waste battery; (2) crushing and sorting the discharged waste battery to obtain a first crushed material and a second crushed material, wherein the first crushed material is obtained by crushing a case and a separator, and the second crushed material is obtained by crushing a positive electrode sheet and a negative electrode sheet; (3) respectively performing gradient roasting on the first crushed material and the second crushed material; (4) obtaining a crushed material of the case from the first crushed material treated in step (3), performing color sorting on the second crushed material to obtain an aluminum electrode sheet material and a copper electrode sheet material, hammering same to separate powders, and sieving same to obtain aluminum foil, a positive electrode powder, copper foil and a negative electrode powder; and (5) leaching the positive electrode powder to recover valuable metals, grading and screening the negative electrode powder, and then carbonizing and coating same to obtain negative-electrode graphite.
A method, a device, an equipment and a storage medium for accounting product carbon footprint based on ICM are provided. The method comprises: acquiring data of carbon footprint within a predetermined system boundary range on a production line for several times within one period at a predetermined acquisition interval, according to an obtained acquisition instruction, wherein the data of carbon footprint comprises regional development index, utilization rate of green product and recovery rate of recycled material; and accounting the carbon footprint according to the data of carbon footprint and a predetermined accounting formula for carbon footprint, to obtain an amount of carbon emission within the period, wherein the amount of carbon emission is in negative correlation with a carbon right factor obtained according to the regional development index, the utilization rate of green product and the recovery rate of the recycled material.
Provided are a single-crystal ternary cathode material and a preparation method therefor and application thereof. The chemical formula of the single-crystal ternary cathode material is LiNixCoyMnzM(1-x-y-z)Oc@LiaNdOb, wherein 0
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
Disclosed herein is a recovery method for a waste ternary battery, belonging to the technical field of material recovery. The method comprises: disassembling a waste ternary battery to obtain an electrode sheet; then carrying out vacuum impurity removal, and separating and recovering an active substance; and finally, by means of a specific restoration means, restoring and regenerating the active substance. The method not only can effectively avoid using treatment reagents, such as strong acid and strong base, of high contamination rates and high cost rates, but also involves mild processing conditions and can be implemented in atmospheric-pressure states, and a restored and regenerated positive electrode material has a low impurity content and excellent electrochemical performance.
The present application relates to the technical field of waste heat recycling and treatment, and discloses a lithium battery material sintering rotary kiln waste heat recycling system and method capable of reducing carbon. The system comprises a first waste heat recycling device, a second waste heat recycling device, and a third waste heat recycling device. The first waste heat recycling device comprises a first evaporator, a first steam turbine generator and a first booster pump which are circularly communicated with one another, and the first booster pump is used for conveying a first working medium to circularly flow in the first evaporator, the first steam turbine generator and the first booster pump; the second waste heat recycling device comprises a second evaporator, a second steam turbine generator and a second booster pump which are circularly communicated with one another, and the second booster pump is used for conveying a second working medium to circularly flow in the second evaporator, the second steam turbine generator and the second booster pump; and the third waste heat recycling device comprises a heat exchanger; fume generated by the rotary kiln sequentially flows through the first evaporator, the second evaporator and the heat exchanger through pipes. According to the waste heat recycling system and method of the present application, the waste heat recycling efficiency is high, and the carbon reduction effect is good.
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 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
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 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
A modified lithium iron phosphate, a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a zirconium salt, a tungstate and a solvent, to obtain a mixed salt solution, adjusting the pH, then adding lithium iron phosphate and performing a heating reaction; (2) separating a slurry obtained by the heating reaction into a solid and a liquid, and subjecting the obtained solid to a one-step sintering treatment, to obtain a first sintered material; (3) mixing an organic carbon source, a lithium source and the first sintered material, and performing a second sintering treatment, to obtain a modified lithium iron phosphate. A material having a negative thermal expansion effect is used as a coating layer, which is then coated with an electrically conductive material, causing pores to appear during a second coating process due to the negative thermal expansion effect, which is conducive to the embedding of organic matter and improves bonding tightness between the two layers of coatings. The pores generated during the negative thermal expansion process are conducive to the entry of lithium ions, which can better generate lithium tungstate and lithium zirconate from the tungsten oxide and zirconium oxide generated by decomposition.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
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
18.
MODIFIED IRON PHOSPHATE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Modified iron phosphate, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing a zirconium salt, a hydrogen phosphate and a tungstate with a solvent to obtain a mixed salt solution, and performing a heating reaction, so as to obtain zirconium phosphotungstate; (2) mixing the zirconium phosphotungstate serving as a seed crystal with an iron salt, a phosphate, phosphoric acid and an oxidizing agent, and performing a synthesis reaction, so as to obtain a modified material; and (3) sintering the modified material, and then grinding same, so as to obtain modified iron phosphate. In the present disclosure, zirconium phosphotungstate is used as a seed crystal to prepare iron phosphate, which can promote the generation of cracks in secondary particles, making iron phosphate easy to break and an iron phosphate precursor having a smaller particle size be obtained; therefore, a high-energy and high-power-density lithium iron phosphate positive electrode material is prepared.
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
B82Y 40/00 - Fabrication ou traitement des nanostructures
19.
COMPOSITE MULTI-ELEMENT POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A composite multi-element positive electrode material, a preparation method, and a use. The multi-element positive electrode material is modified, and near-surface doping is combined with coating using a specific fast-ion conductor material. The near-surface doping improves the stability of the structure of the multi-element material, improves a lattice state, and achieves a certain supporting effect; by building a fast-ion conductor coating layer, the interface stability of the multi-element positive electrode material is further improved, damage to an interface of the multi-element positive electrode material in a rolling process is effectively reduced, exposure and surface slip properties of a fresh interface are reduced, and then the storage performance under a high voltage is improved. By combining near-surface doping with coating using a fast-ion conductor, the obtained composite multi-element positive electrode material has excellent rolling resistance and excellent storage performance under a high voltage of 4.5 V, and the fast-ion conductor with which the surface is coated is beneficial to further improving the capacity per gram.
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 4/36 - 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
20.
INDUSTRY-WIDE INTEGRATED METHOD FOR RECOVERING VALUABLE METALS IN WASTE LITHIUM-ION BATTERY POWDER
The present invention belongs to the technical field of battery recovery. Disclosed is an industry-wide integrated method for recovering valuable metals in a waste lithium-ion battery powder. In the method, a battery powder and activated graphite are mixed, roasted and then subjected to acid leaching, wherein the graphite that floats from the leaching residues can be further returned, after being activated, to the roasting stage for use; and ferrous ions in the metal leachate are oxidized into iron ions first, and then the iron ions are separately removed by means of an iron remover, such that iron phosphate is obtained and can be used for preparing a lithium iron phosphate battery precursor. The method has an excellent impurity removal effect, enables effective utilization of graphite and iron residues, realizes the full and effective use of resources, and has a low treatment cost.
A device for separating positive electrode current collectors of batteries by means of high-voltage pulse, comprising a treatment tank (1), a rotating table (3), a collection tank (2), a pulse discharge part, and a pressing plate (4). The rotating table (3) is arranged in the treatment tank (1) in a liftable/lowerable manner, a plurality of current collector placement positions are arranged on the upper side of the rotating table (3), all the current collector placement positions are distributed at intervals around the axis of the rotating table (3), and a positive electrode contact (301) and a negative electrode contact (302) are arranged in each current collector placement position. The collection tank (2) is arranged around the outer circumferential side of the treatment tank (1), and the collection tank (2) is used for collecting aluminum foils separated from positive electrode current collectors (100). A positive electrode output end of the pulse discharge part is electrically connected to each positive electrode contact (301), and a negative electrode output end of the pulse discharge part is electrically connected to each negative electrode contact (302). The pressing plate (4) is arranged at the upper side of the rotating table (3) in a liftable/lowerable manner, and the pressing plate (4) is used for pressing the positive electrode current collectors (100) on the rotating table (3).
33; mixing the reduced battery powder with water, and introducing carbon dioxide for carbonization leaching, to obtain a leachate material; carrying out solid-liquid separation on the leachate material, wherein the filtrate contains lithium bicarbonate; and carrying out impurity removal and pyrolysis on the filtrate to obtain battery-grade lithium carbonate. According to the present invention, synthesis of a perovskite-type oxide during reduction of battery powder is coupled and coordinated with carbonization leaching, so that carbon dioxide can be fixed, making the carbonization reaction more complete, and reducing the leaching of nickel, cobalt and manganese metals to obtain a pure lithium solution; subsequently, only simple impurity removal is required to obtain battery-grade lithium carbonate by pyrolysis.
The present disclosure belongs to the technical field of recovery of lithium batteries, and specifically relates to a method for preparing lithium by means of full-chain integrated directional recycling of waste batteries. A positive electrode material of a waste lithium battery, a reducing agent and a dispersing agent are mixed and roasted; the dispersing agent is used for enhancing the dispersibility of elemental nickel and elemental cobalt and improving the sufficiency of a reducing roasting reaction, that is, Li in the positive electrode material of the waste lithium battery is brought out by means of displacement so as to facilitate subsequent extraction of same by means of carbonization leaching; and the elemental nickel and elemental cobalt can be effectively dispersed while maintaining the morphology of the positive electrode material itself, thereby greatly improving the leaching rate and/or recovery rate of the metal Li in the positive electrode material of a lithium-ion battery, with the recovery rate of lithium being increased to 99% or higher.
Provided in the present disclosure are a system apparatus and method for comprehensive thermal treatment of solid waste. The system apparatus comprises a hazardous waste gasification system, an industrial solid waste incineration system and a flue gas treatment system. The hazardous waste gasification system comprises a feeding and compatible proportioning part and a gasification part which are connected in sequence, wherein the gasification part comprises four zones, and the four zones, from a feeding position to a discharging position, are sequentially a drying zone, a component devolatilization zone, an oxidation zone and a reduction zone; and the gasification part comprises a first gas outlet used for discharging a gas. The industrial solid waste incineration system comprises an incineration apparatus, wherein the first gas outlet is connected to the incineration apparatus. The method comprises: after undergoing compatible proportioning, hazardous waste entering a gasification part to be sequentially subjected to drying, component devolatilization, oxidation and reduction, to obtain a first gas containing a combustible gas; and industrial solid waste entering an incineration apparatus and being incinerated under the action of the first gas, and a flue gas obtained after incineration being subjected to flue gas treatment and then discharged outwards. By means of the present disclosure, resources can be fully utilized, and the economic benefits can be improved.
B01D 50/20 - Combinaisons de dispositifs couverts par les groupes et
B01D 53/04 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
B01D 53/83 - Procédés en phase solide avec des réactifs en mouvement
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
F23G 5/027 - Procédés ou appareils, p. ex. incinérateurs, spécialement adaptés à la combustion de déchets ou de combustibles pauvres comportant un traitement préalable par pyrolyse ou par gazéification
25.
DRT-BASED PULSE DESORPTION ASSEMBLY AND DEVICE FOR SEPARATING BATTERY ELECTRODE SHEET BY USING HIGH-VOLTAGE PULSE
A DRT-based pulse desorption assembly and a device for separating a battery electrode sheet by using a high-voltage pulse. The pulse desorption assembly comprises a roller (1), a positive electrode plate (2), a negative electrode plate (3), and suction plates (4). The positive electrode plate (2), the negative electrode plate (3), and the suction plates (4) are arranged around the periphery of the roller (1). The positive electrode plate (2) and the negative electrode plate (3) are arranged at an interval, and the positive electrode plate (2) and the negative electrode plate (3) are both connected to a pulse power supply. A plurality of suction holes (41) are formed on each suction plate (4), and the suction holes (41) are used for suctioning a battery electrode sheet (5). By rotating the roller (1), the battery electrode sheet (5) can be wound on the periphery of the pulse desorption assembly, and the positive electrode plate (2) and the negative electrode plate (3) can both be brought into contact with the battery electrode sheet (5).
A ferrimanganic pyrophosphate, which is of a laminar structure. A specific preparation process comprises: performing a coprecipitation reaction on a phosphorus source and a mixed metal salt solution according to a preset molar ratio of elements in ammonium manganese iron phosphate to prepare the ammonium manganese iron phosphate, and further calcining same to obtain the ferrimanganic pyrophosphate; and further preparing lithium manganese iron phosphate by taking the ferrimanganic pyrophosphate as a raw material. Also provided is a battery comprising the lithium manganese iron phosphate 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
The present application relates to the technical field of laterite nickel ore recycling utilization, and discloses a laterite nickel ore recycling utilization method. The method comprises: carrying out high-pressure acid leaching on laterite nickel ore, carrying out first solid-liquid separation, and sequentially carrying out roasting, water washing, and second solid-liquid separation on first separation slag to obtain second separation slag and an aluminum-containing second separation liquid; and carrying out reduction roasting and magnetic separation on the second separation slag to obtain quartz sand and iron ore concentrate. The method is simple to operate, achieves a low cost, causes little environmental pollution, can implement separation of iron and aluminum from laterite nickel ore acid leaching slag and recycling of silicon dioxide, and improves the recycling utilization rate of laterite nickel ore.
The present disclosure relates to a method for separating, purifying and recovering an electrolyte, which method comprises the following steps: (1) mixing an electrolyte of a power battery with a stabilizer, and then subjecting same to a first reduced-pressure distillation treatment, so as to obtain an electrolyte solvent; (2) subjecting the electrolyte solvent obtained in step (1) to a second reduced-pressure distillation treatment, and separating same to obtain a first light component and a heavy component; and dehydrating the obtained first light component, so as to obtain a second light component; and (3) rectifying the second light component obtained in step (2), so as to obtain dimethyl carbonate, ethyl methyl carbonate and diethyl carbonate; and crystallizing and melting the heavy component obtained in step (2), so as to obtain ethylene carbonate. In the present disclosure, all the solvents in the electrolyte of a power battery are separated and purified to obtain a re-commercializable carbonate product having a high yield and a high purity, thereby achieving green cyclic utilization of the electrolyte.
The present disclosure belongs to the technical field of lithium battery recovery, and particularly relates to a recovery method used for waste lithium batteries and applied to lithium battery entire-chain integration. In view of valuable metals (such as nickel, cobalt and manganese) in waste lithium battery powder being insoluble in alkali, aluminum in the waste lithium battery powder can be removed by means of primary alkaline leaching; the aluminum-containing leachate is mixed with glycine, and the cooperative effect of glycine and copper ions is used, such that copper and aluminum are selectively leached out. The recovery method provided by the present disclosure can efficiently remove copper and aluminum at low cost, and improve the valuable metal recovery rate.
Provided in the present disclosure is a recovery method for waste battery powders. The recovery method comprises the following steps: (1) roasting waste battery powders, and extracting lithium from same by means of water leaching, so as to obtain a lithium-rich solution and lithium extraction residue; (2) screening the lithium extraction residue, so as to separately obtain a mixed metal material and a flotation material, mixing the flotation material, crystalline flake graphite and a solvent, adjusting the mass concentration thereof, and then adding a collecting agent and a foaming agent thereto, so as to obtain a slurry; (3) subjecting the slurry to a flotation treatment, screening same to obtain flotation foam and a positive electrode material, screening the flotation foam to obtain high-purity graphite, and recovering the crystalline flake graphite; and (4) repairing the high-purity graphite to obtain battery-grade graphite, and subjecting the positive electrode material to wet recovery, so as to obtain a battery-grade metal material. In the present disclosure, crystalline flake graphite is used as a carrier, and rapid and effective separation of graphite and positive electrode powders are achieved; and the crystalline flake graphite can be recovered after the recovery, thereby achieving the recycling of the carrier.
A potassium-embedded nickel-iron-manganese composite hydroxide, a sodium ion positive electrode material and preparation methods therefor, which belong to the technical field of sodium ion battery positive electrode materials. The preparation method for the potassium-embedded nickel-iron-manganese composite hydroxide comprises adding an additive during coprecipitation so as to perform doping of metal/non-metal ions. Compared with dry-mixing doping and sintering, the ions doped during the coprecipitation of a precursor are more uniformly distributed; in addition, performing potassium ion doping after the coprecipitation does not change the appearance of original particles, and under the action of a strong oxidant, potassium ions can enter hydroxide sites to form a prototype of a solid solution structure, so as to obtain a composite hydroxide solid solution. The potassium ions replace nickel/iron/manganese sites, thereby forming a single phase.
An electrode system for electrochemical lithium extraction, a preparation method therefor, and a use thereof. In the electrode system, symmetrical electrodes are used to perform lithium intercalation and lithium deintercalation to obtain a lithium-rich electrode and a lithium-poor electrode at the same time, and the lithium intercalation amount of the lithium-rich electrode is equal to the lithium deintercalation amount of the lithium-poor electrode.
Disclosed in the present disclosure is a method for full-chain integrated recycling of spent ternary battery powder. Iron-aluminum slag and spent ternary battery powder undergo joint roasting, and then the roasted slag undergoes water leaching for lithium extraction. In one aspect, lithium element is converted by using natroalunite and natrojarosite in the roasted slag, and in the other aspect, a trace amount of nickel, cobalt and manganese residuals in the roasted slag can be recycled together with nickel, cobalt and manganese in the spent ternary battery powder. In embodiments, pyrometallurgy and hydrometallurgy are jointly used, which is conductive to improving the metal recovery rate, reducing the auxiliary reagent consumption cost, simplifying the technological process, and improving the production efficiency.
Provided in the present disclosure is a method for selectively extracting lithium from waste lithium-ion battery powders by means of aluminum-carbon synergistic reduction, which method is characterized by comprising the following steps: S1, mixing a mixed solid consisting of waste battery powders, carbon powders and aluminum powders with an alcohol substance, ball-milling same, and then drying same, so as to obtain a ball-milled material; S2, roasting the ball-milled material, so as to obtain roasted residue; and S3, mixing water and the roasted residue, then introducing carbon dioxide for leaching, and performing solid-liquid separation, so as to obtain a selective lithium extraction liquid and lithium extraction residue.
An ultrasonic vibrating screen includes a bottom frame, at least two screen cylinders, and a vibrating mechanism. An elastic body is provided on the bottom frame; the screen cylinders are arranged in sequence from bottom to top, each screen cylinder is provided with a screen, and one of the screen cylinders is connected with the bottom frame through the elastic body. The vibrating mechanism includes a vibrating frame and at least two ultrasonic transducers, the screen cylinders are all fixed to the vibrating frame, the ultrasonic transducers are fixed to the vibrating frame, and the ultrasonic transducers drive the vibrating frame to vibrate. By fixing all the screen cylinders with the vibrating frame, the amplitudes and frequencies of all ultrasonic transducers which are originally unsynchronized are unified to be the same amplitude and the same frequency as much as possible.
The present application belongs to the technical field of battery materials. Disclosed are a doped iron (III) phosphate, a method for preparing same, and use thereof. The chemical formula of the doped iron (III) phosphate is (MnxFe1−x)@FePO4·2H2O, wherein 0
The present disclosure discloses an aluminum-doped cathode material precursor, and a preparation method therefor and use thereof. The preparation method includes: adding a solution of mixed salts of nickel, cobalt, and calcium, a first aluminum-containing alkali solution, aqueous ammonia, and a sodium hydroxide solution to a medium solution to allow a reaction, and subjecting a resulting reaction product to solid-liquid separation (SLS) to obtain a filter cake; soaking the filter cake in a second aluminum-containing alkali solution, and conducting SLS to obtain a solid material; subjecting the solid material to calcination to obtain a calcined material, and soaking the calcined material in water to obtain the aluminum-doped cathode material precursor. The precursor of the present disclosure realizes the co-precipitation of nickel, cobalt, and aluminum, and by adopting subsequent dechlorination, decalcification, and dehydration, a material with a porous structure is gradually formed which has a low tap density.
The present application provides a preparation method for a positive electrode material precursor having a large channel, and an application thereof. The method comprises: mixing a sodium hexanitrocobaltate aqueous solution, a nickel-manganese mixed salt solution, an oxalic acid solution, and aqueous ammonia for reaction; calcining a solid material; and soaking the calcined material in water to obtain a positive electrode material precursor having a large channel. According to the present application, nickel-cobalt-manganese and sodium-ammonium are co-precipitated and sintered, and then sodium-ammonium is removed; and since the radius of sodium ions is greater than the radius of lithium ions, a large ion channel is left in a nickel-cobalt-manganese precursor framework, thereby facilitating the deintercalation of the lithium ions of a chemically sintered positive electrode material, widening a lithium ion diffusion channel, and remarkably improving the rate capability and the cycle performance of the material.
C01G 53/506 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,5, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,5 avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,8, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,8
39.
METHOD FOR RECYCLING WASTE RESOURCES GENERATED IN BATTERY RECYCLING PROCESS
The present disclosure provides a method for recycling waste resources generated in a battery recycling process. The method comprises: preparing fluorine-containing calcium slag generated in the battery recycling process and a phosphate radical raw material into mixed slurry, and carrying out value adjustment and leaching reaction to obtain alkali metal fluoride and fluorapatite. According to the method, calcium slag and phosphorus-containing wastewater generated in different procedures in a wet recycling process of lithium ion batteries can be utilized; the phosphorus-containing wastewater is used as a phosphate radical raw material, so that sodium fluoride and fluorapatite are obtained by means of treating waste with waste; the sodium fluoride can be used as a leaching aid required in the wet recycling process of lithium ion batteries, and the fluorapatite can be processed as phosphate ore.
The present application relates to the technical field of batteries, and discloses a high-nickel ternary precursor, and a preparation method therefor and a use thereof. The high-nickel ternary precursor prepared by the preparation method provided in the present application has the characteristics of large specific surface area, large pressure particle size and low sulfur content; and a battery prepared using the high-nickel ternary precursor has high capacity and excellent cycling stability. Moreover, the preparation method provided in the present application is simple and efficient to operate and beneficial to actual production.
The present disclosure belongs to the technical field of lithium batteries, and particularly relates to ferric phosphate, a lithium ferric phosphate positive electrode material, preparation methods therefor, and the use thereof. The present disclosure uses a ferrous iron source and copperas together as iron sources, and controls the dosages of the two components to enable copperas to serve as not only an iron source but also a dopant, so that impurity elements, such as Ti, Mn and Mg, contained in copperas are introduced into ferric phosphate as beneficial doping elements and are further introduced into the lithium ferric phosphate positive electrode material. During a reaction process, a polymer monomer is polymerized in situ onto the surface of ferric phosphate, so as to limit the particle size of the material, thereby obtaining precursor particles having more uniform particle size and appearance. Thus, uniform coating and doping means can remarkably improve the electrochemical properties of lithium ferric phosphate. In addition, the preparation method for ferric phosphate provided by the present disclosure achieves high-added-value resource utilization on copperas without the need of impurity removal, thereby achieving the effects of reducing the cost and improving the efficiency.
A method for recycling aluminum and iron from iron-aluminum slag. The method comprises: (1) mixing iron-aluminum slag with a first alkaline liquor to carry out an alkaline conversion reaction, and performing solid-liquid separation, so as to obtain a sulfate solution and alkaline-converted iron-aluminum slag; (2) mixing the alkaline-converted iron-aluminum slag with a second alkaline liquor to carry out an alkaline leaching reaction, and performing solid-liquid separation, so as to obtain an aluminate solution and iron slag; and (3) subjecting the iron slag to acid dissolution, then adding sulfuric acid to precipitate ferric sulfate, and performing solid-liquid separation, so as to obtain ferric sulfate crystals and an acid solution. By means of the method, iron and aluminum in iron-aluminum slag can be effectively separated and recycled.
C22B 3/12 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques alcalines
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
A lithium-rich manganese-based positive electrode material, and a preparation method therefor and a use thereof. The surface of the lithium-rich manganese-based positive electrode material is coated with a manganese-containing first coating layer at a high temperature, so that the surface of the lithium-rich manganese-based positive electrode material is enriched with manganese, thereby regulating the distribution of two phases and making the distribution of matrix elements more uniform, and reducing the probability of phase transition during high-temperature coating in second sintering; and then elements such as Al, Zr, Sr, Ti, and Mg are applied for coating to form a second coating layer, thereby increasing the capacity and maintaining the structural stability, and prolonging the cycle life under large-rate conditions.
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
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 4/131 - Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p. ex. LiCoOx
A lithium nickel manganese oxide positive electrode material, and a preparation method therefor and a use thereof. The lithium nickel manganese oxide positive electrode material comprises an inner core and an anion and cation co-coating layer arranged on the surface of the inner core, and the phase of the lithium nickel manganese oxide positive electrode material comprises a spinel phase and a layered phase. The lithium nickel manganese oxide positive electrode material comprises a spinel phase and a layered phase, and the spinel phase and the layered phase have good compatibility, so that a diffusion channel of Li is increased, good rate capability is achieved, and high capacity is maintained.
A short-process regeneration method for a waste lithium cobalt oxide positive electrode material, comprising the following steps: (1) adding a waste lithium cobalt oxide positive electrode material into a mixed solution containing an inorganic acid and a reducing agent for leaching, and filtering to obtain a leachate; (2) adding alkali liquor into the leachate prepared in step (1) to precipitate aluminum and iron, filtering to obtain an aluminum-removed and iron-removed liquid, removing calcium and magnesium from the aluminum-removed and iron-removed liquid by using a chelating resin to obtain a calcium-removed and magnesium-removed liquid, and then extracting cobalt ions and lithium ions from the calcium-removed and magnesium-removed liquid by using a cobalt and lithium extractant to obtain a purified liquid containing cobalt and lithium; (3) performing spray pyrolysis on the purified liquid prepared in step (2) to obtain a lithium cobalt oxide; and (4) mixing the lithium cobalt oxide prepared in step (3) with a lithium source, and calcining to obtain a lithium cobalt oxide finished product.
A method for full-chain integrated recovery of iron-aluminum slag produced during battery recycling. The method comprises the following steps: (1) mixing iron-aluminum slag with water, carrying out pressurized leaching with water, so as to obtain water leaching residues and a water leachate, and using water to wash the water leaching residues, so as to obtain a lithium-rich solution; (2) evaporating and concentrating the lithium-rich solution, then carrying out low-temperature crystallization, performing solid-liquid separation to obtain sodium sulfate crystals and a lithium precipitation mother liquor, mixing the lithium precipitation mother liquor with sodium carbonate and performing solid-liquid separation to obtain lithium carbonate; (3) mixing the water leaching residues with the mother liquor, carrying out pressurized alkali leaching and performing solid-liquid separation to obtain alkali-leaching residues and a leachate of alkali leaching; and (4) mixing the leachate of alkali leaching with an impurity remover, and performing solid-liquid separation to obtain calcium fluorophosphate impurity precipitate and an impurity-removed purified solution, and crystallizing the impurity-removed purified solution, so as to obtain aluminum hydroxide crystals and a mother liquor for recycling. Pressurized leaching of iron-aluminum slag generated during battery recycling achieves comprehensive resource utilization of the hazardous solid waste iron-aluminum slag.
A directional cyclic leaching method for lithium iron phosphate black powder, the lithium iron phosphate black powder being leached by means of introducing ozone into an ammonia water system.
xyzthmngjku22, and the sodium-ion positive electrode material is an O3-phase material. In the preparation method, by adding and mixing a sodium source in two steps and performing two-step sintering, a P2/O3 mixed phase is first generated to serve as an intermediate phase in a manner that the sodium source gradually increases, wherein the presence of a P2 phase can make the subsequent secondary sintering reaction more sufficient and the diffusion of elements more uniform and enables sodium ions to be uniformly supplemented into a bulk phase, resulting in an O3 phase finished product ultimately prepared having a lower content of surface residual sodium, good stability in air and good rate 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 4/485 - 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 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
49.
POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD AND USE
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 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
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
50.
WASTE POSITIVE ELECTRODE MATERIAL FULL-CHAIN INTEGRATED REPAIR AND REGENERATION METHOD AND APPLICATION THEREOF
Provided in the present application are a waste positive electrode material full-chain integrated repair and regeneration method and an application thereof. The method comprises the following steps: (1) mixing waste positive electrode material with a sodium source, and performing calcination treatment to obtain sodium-doped waste positive electrode material; (2) taking the sodium-doped waste positive electrode material as an adsorbent for performing carbon dioxide adsorption treatment to obtain adsorbed positive electrode material; and (3) mixing the adsorbed positive electrode material with a carbon-containing lithium source, and performing sintering treatment to obtain repaired and regenerated positive electrode material. The doped sodium ions in the repair and recovery process increase the carbon dioxide adsorption efficiency and also replace lithium, so that the structural stability of the positive electrode material can be effectively improved while lithium defects are repaired, reducing the capacity loss of the electrode material during charging and discharging; the valence of nickel ions can also be stabilised, lithium-nickel mixing can be reduced, and to a certain extent phase changes during charging and discharging can be inhibited, thereby improving structural stability and electrochemical performance.
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
51.
HIGH-VOLTAGE PULSE SEPARATION DEVICE FOR POSITIVE ELECTRODE SHEET OF RETIRED LITHIUM-ION BATTERY
Disclosed in the present application is a high-voltage pulse separation device for a positive electrode sheet of a retired lithium-ion battery. The device comprises a tray assembly (1), a cutting mechanism (2) and a high-voltage pulse mechanism (3), wherein the tray assembly (1) is formed by assembling tray bodies (11), the upper surface of the tray assembly (1) serving as a support flat surface, which is configured to support an electrode sheet (100) to be cut; a first fixing plate (12) is further provided on the upper surface of each tray body (11), and the side edge of the electrode sheet (100) is fastened between the first fixing plate (12) and the tray body (11); a cutter (22) is disposed above a cutting operation zone, and the cutter (22) can move to be inserted into a gap between two tray bodies (11), thus cutting the electrode sheet (100) into two electrode sheets (200) to be pulsed; and a pulse operation zone of the high-voltage pulse mechanism (3) is configured for placement of the tray body (11), and two pulse electrodes (34) are respectively connected to two ends of each electrode sheet (200) to be pulsed.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B23D 31/00 - Machines à cisailler ou dispositifs de cisaillage couverts par aucun ou par plusieurs des groupes Combinaisons de machines à cisailler
B23D 15/04 - Machines à cisailler ou dispositifs de cisaillage taillant au moyen de lames se déplaçant parallèlement les unes par rapport aux autres n'ayant qu'une lame mobile
B23D 33/02 - Agencements pour tenir, guider ou faire avancer les pièces pendant le travail
A lithium-ion battery composite positive electrode material, and a preparation method therefor and the use thereof. The lithium-ion battery composite positive electrode material comprises a positive electrode matrix material and a composite polymer coating layer coating the surface of the positive electrode matrix material. The composite polymer coating layer is obtained by means of a cross-linking reaction of an ionic conductive polymer and PEDOT:PSS. The ionic conductive polymer comprises any one or a combination of at least two of PEO, PEG or PEI. By means of cross-linking the ionic conductive polymer and PEDOT:PSS, a uniform and compact composite polymer coating layer is formed, thereby reducing the crystallinity of the ionic conductive polymer, and modifying a sulfonic acid group of PEDOT:PSS, such that the synergistic effect of the ionic conductive polymer and PEDOT:PSS achieves an electron-ion dual-function channel conductive effect. The composite polymer coating layer effectively improves the electron transport rate and reaction kinetics of the positive electrode material.
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 4/60 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés organiques
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
53.
FULL-CHAIN INTEGRATED METHOD FOR RECOVERING NICKEL AND COBALT FROM WASTE TERNARY BATTERY POWDERS
22244 is then used for precipitating valuable metals, and therefore the solution can be ensured to have a stable pH, which is maintained within a stable pH range, and the growth speed of nickel-cobalt hydroxide particles is slowed down at the same time, thereby greatly improving the product purity and obtaining a product having a low water content and large particles.
Disclosed in the present disclosure are a nickel-manganese-copper-iron carbonate precursor, a preparation method, and the use in the preparation of a sodium-ion battery positive electrode material. Four metal ions of Ni2+, Mn2+, Fe2+and Cu2+ can be complexed, and the metal ions are slowly released under the action of a precipitator, thereby co-precipitating the four metal ions, such that the prepared precursor is uniform in terms of morphology and segregation does not occur. Impurities such as sodium and sulfur in the precipitated product can be reduced by means of performing a post-treatment on the product, and the content of copper in the precursor can also be increased.
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 4/50 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse
55.
FILTER DEVICE AND PREPARATION SYSTEM FOR NICKEL-COBALT-MANGANESE PRECURSOR
A filter device (1) for a nickel-cobalt-manganese precursor, comprising: a tank (11), a filter screen (12), an iron remover (13), a filter inlet valve (14) and a filter outlet valve (15), wherein the tank (11) is provided with a feed inlet (111) and a discharge outlet (112), the feed inlet (111) and the discharge outlet (112) respectively being arranged at two ends of the tank (11) in a first direction (X), the filter inlet valve (14) being arranged at the feed inlet (111), and the filter outlet valve (15) being arranged at the discharge outlet (112); the filter screen (12) is detachably arranged inside the tank (11) and, in the first direction (X), divides the interior of the tank (11) into a feed cavity (113) and a discharge cavity (114), the feed cavity (113) being in communication with the feed inlet (111), and the discharge cavity (114) being in communication with the discharge outlet (112); and the iron remover (13) is mounted on the side wall of the tank (11) and located in the feed cavity (113).
Disclosed is a salt lake lithium extraction electrodialysis apparatus, which relates to the technical field of lithium salt production. Said apparatus comprises a containing assembly, an electrodialysis assembly, and a stirring assembly; the containing assembly comprises a barrel, a top cover, and a feed pipe; the top of the barrel is rotatably connected to the top cover, the barrel is in communication with one end of the feed pipe, and an inner slot is formed on an inner wall of the barrel; a communication pipe is arranged on the top cover; the electrodialysis assembly comprises a first anode cylinder, a first ion exchange membrane, a first cathode cylinder, a second ion exchange membrane, and a second anode cylinder; the top of the first anode cylinder is fixedly connected to the top cover, and a gap is present between the bottom of the first anode cylinder and the bottom wall of the barrel body. The present apparatus facilitates lithium chloride, sodium, and potassium cations in passing through the first ion exchange membrane and entering into a space between between the first ion exchange membrane and the first cathode cylinder, and after a round of purification, a concentrated solution is formed; also, the present apparatus can stir and mix a raw material liquid, which accelerates the movement of cations in the raw material liquid and is beneficial for improving extraction efficiency.
C25C 1/02 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions des métaux légers
C02F 1/469 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par des procédés électrochimiques par séparation électrochimique, p. ex. par électro-osmose, électrodialyse, électrophorèse
A battery crushing apparatus, comprising a conveying apparatus (1), a crushing box (2), a shock-absorbing apparatus (3), an air cylinder assembly (4), a crushing cavity (5), a third electric telescopic assembly clamping apparatus (6), a liquid suction apparatus (7), a nitrogen inflation apparatus (8), a crushing apparatus (9), and a dust suction apparatus (10), the liquid suction apparatus (7) being fixed at one end of the crushing box (2), the crushing cavity (5) being arranged in the crushing box (2), the liquid suction apparatus (7) penetrating the crushing cavity (5), and the dust suction apparatus (10) being mounted on the side of the crushing box (2) furthest from the liquid suction apparatus (7); direct breakdown can be implemented, and breakdown is more detailed: after being separated, the liquid and solid can be further broken down; the electrolyte can be recycled, and after being broken down, the solid can be transported out in a unified manner for unified treatment, so that the presence of liquid will not affect transportation; in addition, as the liquid is extracted in advance, environmental pollution can be avoided.
A vehicle-mounted battery crushing apparatus, comprising a rotating mechanism (1), the rotating mechanism being fixedly connected to the inside of a carriage (7) to lift batteries; turnover mechanisms (2), there being multiple turnover mechanisms fixedly surrounding a rotating end of the rotating mechanism to feed in batteries; a battery storage mechanism (3), the battery storage mechanism being fixedly connected to the inside of the turnover mechanism to store batteries; and a crushing mechanism (4), the crushing mechanism being fixedly connected to one side of the rotating mechanism to crush batteries; the rotating mechanism can drive the plurality of turnover mechanisms on the surface of the rotating mechanism to rotate so as to lift batteries to the highest point for feeding in; during the process of the rotating mechanism driving the turnover mechanisms to rotate, the battery storage mechanism keeps an opening in the turnover mechanism facing upward the whole time, so that a worker can conveniently place batteries into the battery storage mechanism through a feed opening formed in the carriage.
222 nanosheet solution to obtain a mixed solution; and (3) performing solid-liquid separation treatment on the mixed solution, and performing calcination treatment on the obtained solid material to obtain the modified positive electrode material. By means of preparing nanoparticles with strong electronegativity and making the particles of the positive electrode material charged, the nanoparticles with strong electronegativity are uniformly and spontaneously loaded on the charged particles by utilising the acting force between the nanoparticles with strong electronegativity and the electrons, and finally a uniform coating layer is formed on the surface of the positive electrode material by means of calcination.
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 4/505 - 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
60.
DOPED MODIFIED HARD CARBON MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
A doped modified hard carbon material, a preparation method therefor and a use thereof, relating to the technical field of new energy materials. According to the preparation method, a discharge plasma is used in combination with a ball milling process to sequentially dope oxygen atoms and sulfur atoms into a pre-carbonized raw material, and then calcination is carried out to form a hard carbon material, and a discharge plasma is used in combination with an oscillation vibration process to further carry out carbon coating treatment on a doped material. In this way, a special chemical reagent is not needed to generate waste liquid, and the production energy consumption is low. Due to doping of oxygen atoms and sulfur atoms and coating modification of a carbon layer, the produced product has large spacing of material layers, has a large number of pore sites in the interior for sodium ion storage, has moderate specific surface area, and shows high sodium storage capacity and initial coulombic efficiency when being applied to a sodium ion battery.
233 on the surface of the matrix, such that the occurrence of gas production is further inhibited. In addition, the positive electrode material prepared in the present application can effectively inhibit high-pressure gas production by utilizing the characteristics of strong bond strength of the Al-O bond and strong bond strength of the Mg-O bond, without decreasing voltage, and can also maintain high capacity, and has good development potential.
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
62.
WASTE BATTERY ELECTROLYTE COLLECTION APPARATUS AND USE METHOD THEREOF
Disclosed are a waste battery electrolyte collection apparatus and a use method thereof. The waste battery electrolyte collection apparatus comprises a conveying mechanism (10) and a liquid collection mechanism (20), the liquid collection mechanism (20) comprising a liquid collection tank (21), a liquid collection pipe (22), a cutter (23), a driving assembly (24) and an elastic body (25). A surface of the elastic body (25) facing the conveying mechanism (10) is provided with multiple protrusions (25a) disposed in an annular manner and spaced apart. A through hole (25b) is provided in the middle of the elastic body (25), and the through hole (25b) is used to guide an electrolyte flowing out of a liquid flow port (b) into the liquid collection pipe (22). The apparatus can effectively prevent odor generated by the electrolyte from being emitted into air from the liquid flow port (b).
A method for preparing battery-grade lithium carbonate from brine lithium carbonate, comprising the following steps: dissolving brine lithium carbonate to obtain a lithium-containing solution, and adding an extraction agent into the lithium-containing solution to perform extraction, to obtain an extraction solution and a raffinate; performing reverse extraction on the extraction solution to obtain a reverse extraction solution, and performing lithium precipitation processing or pyrolysis on the reverse extraction solution, to obtain battery-grade lithium carbonate, the extractant comprising a β-diketone and a co-extraction agent.
A recovery system and a recovery method for lithium-iron-phosphate precursor slurry iron-discharge sewage. The recovery system comprises a first filter (4), a pipeline iron remover (5) and a second filter (8), which are connected in sequence, in the movement direction of lithium-iron-phosphate precursor slurry iron-discharge sewage (1). The recovery system can effectively treat the lithium-iron-phosphate precursor slurry iron-discharge sewage (1), realizing filter cake recovery and filtrate reuse, wherein recovered pure water is recycled to reduce the manufacturing cost of the pure water, and the sewage that has been treated by means of the system can be recovered for production line dosing or cleaning equipment, thereby achieving zero discharge of production line sewage.
A vehicle-mounted battery crushing mechanism, comprising: a first crushing assembly (1), the first crushing assembly (1) being arranged within a vehicle compartment (8) and being arranged at an angle to transport a battery; a second crushing assembly (2), the second crushing assembly (2) being rotatably connected to the top of the first crushing assembly (1) to compress and crush a battery; a cutting assembly (3), the cutting assembly (3) being fixedly connected on the first crushing assembly (1) and fixedly connected to a rotating shaft of the first crushing assembly (1), the cutting assembly (3) cutting the battery on the side opposite the first crushing assembly (1) and the second crushing assembly (2). The present mechanism solves the technical problems where, when using current vehicle-mounted battery crushing mechanisms, it is not convenient to rapidly crush waste batteries entering into a vehicle compartment into small materials capable of being collected, thus reducing crushing efficiency of batteries, and it is not convenient to collect waste liquid when performing crushing, thus reducing subsequent treatment efficiency of the waste batteries.
B26D 1/00 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupantAppareils ou machines à cet effetÉléments coupants à cet effet
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 6/52 - Récupération des parties utiles des éléments ou batteries usagés
Provided in the present disclosure is a recycling method for ferrophosphorus slag. The recycling method comprises the following steps: (1) mixing ferrophosphorus slag, a conductive agent and a binder, pressing same into a sheet, then compounding the sheet with a current collector to obtain a cathode electrode, mixing a waste lithium-ion battery positive electrode powder, the conductive agent and the binder, pressing same into a sheet, and compounding the sheet with the current collector to obtain an anode electrode; (2) injecting an electrolyte into a cathode chamber and an anode chamber of an electrolysis device, providing an anion exchange membrane between the cathode chamber and the anode chamber, and applying a voltage to the cathode electrode and the anode electrode to carry out an electrolytic reaction; and (3) adjusting the pH of the cathode chamber, adding an oxidizing agent thereto to carry out an oxidation reaction, and sintering the obtained precipitate to obtain a battery-grade iron phosphate. In the present disclosure, by using the ferrophosphorus slag, which has been pressed into blocks, as the cathode of an electrolytic cell, ferric iron therein is reduced into ferrous iron and dissolved out, and aluminum ions continue to remain in the ferrophosphorus slag blocks, thereby achieving the separation of iron and aluminum.
The present application relates to a device for separating a battery electrode sheet by a high-voltage pulse, and a battery electrode sheet recycling method. The device for separating a battery electrode sheet by a high-voltage pulse comprises a water tank (4), a pulse discharge assembly (3), a guide assembly (1) and a driving assembly (2). The pulse discharge assembly (3) is located above the water tank (4). The pulse discharge assembly (3) comprises a power supply and two clamping heads (32) arranged at an interval, the clamp heads (32) are electrically connected to the power supply, and the clamp heads are configured to clamp a battery electrode sheet (6). The guide assembly (1) is configured to drive the pulse discharge assembly (3) to move up and down, and enable the battery electrode sheet (6) to be selectively immersed in water. The driving assembly (2) is configured to drive the pulse discharge assembly (3) to move along the length direction of the water tank (4).
A method for recycling waste lithium iron phosphate, belonging to the technical field of material recycling. The method specifically separately reprocesses the precipitate and leachate obtained by separating and leaching waste lithium iron phosphate powder, using membrane concentration to highly enrich the lithium ions in the leachate and fully utilizing the filtrate generated during the treatment process, and ultimately can simultaneously and efficiently recover and obtain lithium salt and iron phosphate products. The entire method can achieve a lithium recovery rate of 95% or greater for waste lithium iron phosphate, the maximum concentration of impurity elements in the obtained iron phosphate not exceeding 5 ppm, and the quality of the iron phosphate product being relatively high.
Provided in the present application are a biomass-based hard carbon material, and a preparation method therefor and the use thereof. The preparation method comprises: sequentially performing anaerobic baking, impurity removal, oxidative modification and high-temperature carbonization on a biomass raw material to obtain a biomass-based hard carbon material. In the present application, by means of first sequentially performing anaerobic baking and impurity removal, lignin, cellulose, etc., in the biomass raw material are destroyed, and pores and defects are left inside the biomass raw material, such that the material is in a metastable-state structure to expose impurities; thus, impurity removal can be selected at a normal temperature, and an impurity removal effect is good; and the impurity content of the obtained biomass-based hard carbon is low, the ash content thereof can be reduced to 0.5 wt% or below, and the obtained biomass-based hard carbon has a disordered interlayer structure, thereby facilitating the intercalation/deintercalation of sodium ions, such that the material can show relatively high reversible capacity and initial efficiency performance.
C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
H01M 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p. ex. au magnésium ou à l'aluminium
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
71.
LITHIUM IRON PHOSPHATE COMPOSITE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A lithium iron phosphate composite material, and a preparation method therefor and the use thereof. The preparation method comprises: mixing a porous inorganic nanofiber aerogel, a lithium source, an iron source, a phosphorus source and a carbon source to obtain a dispersion, carrying out spray drying to obtain a precursor, and then sintering same to obtain a lithium iron phosphate composite material. The porous inorganic nanofiber aerogel is used for in-situ compounding of lithium iron phosphate, and the lithium iron phosphate is synthesized; the presence of the porous nanofiber makes lithium iron phosphate particles be more uniformly distributed and do not agglomerate; and the dual effect of combining the porous nanofiber with the aerogel can effectively shorten the transport path of Li+, thereby effectively improving the rate capacity of an obtained material. In addition, a supporting effect can further be achieved, thereby avoiding damage caused by pressing and other machining processes, and volume change during charging and discharging of the obtained material can be alleviated, thereby avoiding the problem of cracking, etc., and improving the stability of the material.
H01M 4/1397 - Procédés de fabrication d’électrodes à base de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFy
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
A battery tab cutting apparatus, comprising a clamping assembly (1), a cutting assembly (2) and a linkage assembly. A rack (34) is disposed on the clamping assembly (1). The cutting assembly (2) comprises a cutting base plate (21), a swing rod (22) and a cutter (23), the cutting base plate (21), the swing rod (22) and the cutter (23) being connected in sequence, and the cutter (23) being swingably disposed on the cutting base plate (21) by means of the swing rod (22). The linkage assembly comprises a first linkage member (31), a second linkage member (32), a third linkage member (33) and the rack (34), the rack (34) being disposed on the clamping assembly (1). The cutting base plate (21) is rotatably sleeved on the first linkage member (31). The first linkage member (31) is provided with a first spiral tooth section (311) and a second spiral tooth section (312). The second linkage member (32) is connected to the swing rod (22), and the second linkage member (32) has a threaded connection to the first spiral tooth section (311). Two ends of the third linkage member (33) engage with the second spiral tooth section (312) and the rack (34), respectively. The battery tab cutting apparatus can cut a tab off while pulling a cover plate away from a housing, such that the pulling away of the battery cover plate and the cutting of the tab can be performed in a link matter, thereby improving the overall operation efficiency of battery disassembly.
The present text belongs to the technical field of fluorine-containing waste residue recycling, and in particular relates to a method for recycling fluorine-containing waste residue. The present text discloses: by means alkali leaching, performing secondary alkali leaching treatment on a fluoride salt-type fluorine-containing waste residue. The method is simple, efficient, and low in cost; sodium fluoride can be recycled from the fluoride salt, reducing waste residue processing pressure.
B09B 3/80 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant une étape d'extraction
74.
SODIUM PHOSPHATE-COATED SODIUM ION POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
A sodium phosphate-coated sodium ion positive electrode material, a preparation method therefor and a use thereof, belonging to the technical field of battery materials. The sodium phosphate-coated sodium ion positive electrode material comprises a sodium ion positive electrode material and a sodium phosphate layer coated on the surface of the sodium ion positive electrode material, the thickness of the sodium phosphate layer being 1-20 nm. The sodium phosphate comprises at least one of sodium calcium phosphate, sodium barium phosphate, sodium strontium phosphate, sodium magnesium phosphate, and sodium aluminum phosphate. The sodium phosphate-coated sodium ion positive electrode material has a round shape, smooth surface, and uniform thickness.
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 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
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
The present application discloses an automated apparatus and treatment method for treating a positive electrode sheet by pulse discharging. The automated apparatus comprises a box body, a cutting and feeding mechanism, and a pulse generating mechanism. The box body is provided with a cavity, the cavity being provided with an opening. The cutting and feeding mechanism comprises a first driving member, a rotating shaft, a plurality of first holding assemblies, and at least one cutting member. The plurality of first holding assemblies are uniformly distributed around the circumference of the rotating shaft. The first holding assemblies each comprises a first holding head and an extension part, the extension part being connected between the first holding head and the rotating shaft, and the first holding head being capable of holding a positive electrode sheet and rotating along with the rotating shaft to approach the opening. The cutting member is arranged near the first holding head, and the cutting member is capable of cutting the positive electrode sheet. The pulse generating mechanism comprises a second holding assembly and a third holding assembly. Both the second holding assembly and the third holding assembly are capable of holding the positive electrode sheet to pass through the opening and both are capable of being energized. In this way, automatic cutting and feeding and pulse discharging treatment can be performed on the positive electrode sheet by means of the automated apparatus.
A nano-cobalt(II) hydroxide, a preparation method therefor, and a use thereof, belonging to the technical field of lithium-ion batteries. The preparation method comprises: reacting a cobalt salt solution and a precipitant solution at 30-35 ℃, and during the reaction process, adjusting the amount of precipitant solution added so as to control the pH of the reaction system to be 13-13.5, and after the reaction is finished, obtaining a nano-cobalt(II) hydroxide slurry. The precipitant solution comprises a liquid alkali and a deflocculant, and the mass ratio of the solute in the liquid alkali to the deflocculant is 1:0.02-0.05. Carrying out the reaction at a lower temperature prevents particle agglomeration caused by intensified Brownian motion among particles, thus facilitating the synthesis of ultra-fine nano-cobalt(II) hydroxide while reducing energy consumption; when the interaction forces between molecules become stronger, the use of both a higher pH and the deflocculant allows good dispersibility to still be maintained, thus reducing the occurrence of agglomeration; and the obtained crystal grains are small in size, are not prone to agglomerate, and have good dispersibility.
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
77.
WASTE ACTIVATED CARBON MODIFICATION AND REGENERATION METHOD AND MODIFIED AND REGENERATED ACTIVATED CARBON
Disclosed in the present invention are a waste activated carbon modification and regeneration method and modified and regenerated activated carbon. The method comprises: sequentially performing chemical complexation, chemical modification and heating modification regeneration on waste activated carbon to obtain modified and regenerated activated carbon. According to the method in the present application, valuable metals in the waste activated carbon can be recycled by means of the step of chemical complexation; after recycling, the waste activated carbon is modified by means of the step of chemical modification, so that the specific surface area of the waste activated carbon can be increased, the surface functional groups thereof are increased, and the polarity thereof is increased; and then by means of the step of heating modification regeneration, most of organic matters on the waste activated carbon can be decomposed and gasified, thereby reducing the carbon loss, enhancing a pore structure of the activated carbon, and optimizing the adsorption performance of the activated carbon, obtaining the modified and regenerated activated carbon having good performance.
The present application belongs to the field of nickel laterite treatment methods, and specifically relates to a method for producing high-grade nickel matte using nickel laterite. Nickel laterite (such as limonite-type nickel laterite) having high iron content and low nickel and silicon content is used as a raw material, and sequentially undergoes steps such as over-reduction roasting, magnetic separation, and reduction-sulfidation roasting, to prepare high-grade nickel matte. In the process route provided by the present invention, existing equipment such as rotary kilns, electric furnaces, and magnetic separators can be used for production; the process is easy to control, and costs are low. The process route provided by the present application can also achieve the purpose of directly using limonite-type nickel laterite to produce high-grade nickel matte, while ensuring the nickel recovery rate.
The present disclosure relates to the technical field of positive electrode materials for lithium ion batteries and provides a high-nickel positive electrode material, and a preparation method therefor and a use thereof. The present disclosure comprises: first preparing a high-nickel core precursor by means of a co-precipitation method, and then preparing a carbonate shell layer containing a dioxime compound by means of a two-step method; obtaining a core-shell structure high-nickel positive electrode material precursor, and carrying out a chelation reaction between the dioxime compound in the carbonate shell layer and nickel ions, so that the nickel content in the carbonate shell layer is reduced, the thermal stability of the high-nickel positive electrode material is improved, and the instability problem caused by an excessively high nickel content in the high-nickel positive electrode material is solved. In addition, due to the chelation reaction between the dioxime compound and the nickel ions, a shell structure having a low nickel gradient can be formed in the carbonate shell layer, and the nickel content in the carbonate shell layer gradually decreases along the direction away from the core structure. In addition, in the present disclosure, an organic solvent is used for washing, so that the impact of water on the structure of the high-nickel positive electrode material can be avoided.
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 remaining-battery-capacity-based low-carbon recycling method and apparatus for a traction battery, and a computer-readable storage medium. The recycling method comprises: when the carbon emission amount corresponding to the power supply efficiency of a traction battery is greater than a preset carbon emission index value, determining to recycle the traction battery, and additionally providing a heat recovery apparatus in a traction battery recycling apparatus, wherein the heat recovery apparatus is used for recovering heat which is generated when the traction battery breaks, and used for heating air inside the traction battery recycling apparatus; and selecting from among a plurality of different time periods the time period corresponding to the lowest carbon emission amount, so as to recycle the traction battery. The operating efficiency of the traction battery is accurately determined on the basis of real-time working state data of different parameters of the traction battery, and an appropriate occasion is selected for recycling the traction battery; and the impact of recycling the traction battery in different time periods on carbon emissions is calculated, and an appropriate time period is selected for recycling the traction battery.
Disclosed is a resource utilization method for iron-aluminum slag and nickel laterite ore acid leaching residue, belonging to the technical field of resource recovery and reuse. In the method, ternary solid waste iron-aluminum slag is processed using a suspension roasting pre-reduction pyrogenic method; after initial drying, and by means of a suspension roasting pre-reduction furnace, the iron-aluminum slag is further dried to remove water of crystallization and is pre-reduced, and valuable metals such as Ni and Co are enriched. The method has high pre-reduction efficiency and low production costs, is environmentally friendly, and the entire process is highly operable and produces little ferronickel slag. The ferronickel and nickel pig iron prepared and obtained via the present method have high nickel and iron content, and the ferronickel and nickel pig iron of the present invention have a high Ni, Co, and Fe direct recovery rate.
The present invention belongs to the field of lithium-ion batteries. Disclosed are a lithium iron phosphate composite material and a preparation method therefor. By subjecting lithium iron phosphate to morphology design in a product system, introducing a titanium dioxide nanotube and constructing a cross-linked carbon conductive network coating layer having a special structure, the existing performance defects of lithium iron phosphate are effectively solved, and good rate capability can be shown when lithium iron phosphate is used in a positive electrode material of a lithium-ion battery, and therefore the prepared lithium iron phosphate composite material is very suitable for full-chain integrated production in the field of power batteries.
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 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
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
83.
COATED MODIFIED POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR
A coated modified positive electrode material and a preparation method therefor. The preparation method for the coated modified positive electrode material comprises the following steps: mixing a lithium source, a precursor and a compound containing M, and performing calcining, crushing and sieving to obtain a sintered product; and putting the obtained sintered product and a compound containing M' into a reaction kettle for stirring, and performing stepwise heating, continuous stirring and cooling to obtain the coated modified positive electrode material. The coated modified positive electrode material has a uniform surface coating, less floating powder and the like, simple and mild preparation conditions, significantly reduced manufacturing processes, more controllable quality stability, and low manufacturing cost, and is more environmentally friendly. The prepared lithium-ion battery interface is relatively more stable, and has advantages in performance such as service life and gas production without affecting 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
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
84.
PREPARATION METHOD FOR AND USE OF SODIUM-ION BATTERY NEGATIVE ELECTRODE MATERIAL
66222-NiS, biochar, and a binder in water, heating for reaction, carrying out solid-liquid separation, drying an obtained solid, and sintering in an inert atmosphere to obtain the sodium-ion battery negative electrode material.
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
85.
METHOD FOR REMOVING ALUMINUM AND COPPER FROM A FERRIC PHOSPHATE RESIDUE AND USE THEREOF
A method for removing aluminum and copper from a ferric phosphate residue and the use thereof, the method comprising: subjecting a ferric phosphate residue to acid leaching to obtain an acid leaching solution; then mixing iron simple substance with the acid leaching solution to perform a first copper removal reaction, then mixing same with a soluble sulfide, such as sodium sulfide, and performing a second copper removal reaction, so as to obtain a copper-removed acid leaching solution; mixing an extractant with the copper-removed acid leaching solution, and performing extraction to obtain a ferrous phosphate solution and an aluminum-rich organic phase, thereby completing the removal of aluminum and copper. The present invention uses iron powder and a soluble sulfide for deep removal of copper and then extracts aluminum by using an extractant having high selectivity on aluminum, thus achieving the separation and removal of aluminum and copper. Using the iron powder and soluble sulfide can convert ferric iron in the system into ferrous iron, thereby preventing the loss of iron element during aluminum extraction processes, ensuring the recovery ratio of ferric phosphate to be greater than 99%, and effectively improving the purity of the obtained ferrous phosphate solution.
A waste battery feeding system for a whole industrial chain, the system comprising: a support frame, wherein a workbench is rotatably provided on the support frame, the workbench has a plurality of stations, a battery cell clamp is fixedly provided on each station, a glue grinding device, a voltage measuring device, an insulation treatment device, a qualified cell grasping device and an unqualified cell grasping device are sequentially provided on the support frame in the circumferential direction of the workbench, and the glue grinding device, the voltage measuring device, the insulation treatment device, the qualified cell grasping device and the unqualified cell grasping device are all arranged corresponding to one station; a first conveyor line arranged on one side of the qualified cell grasping device; and a second conveyor line arranged on one side of the unqualified cell grasping device.
A positive electrode material, a preparation method for a positive electrode material, and a use of a positive electrode material. The positive electrode material comprises titanium dioxide coated on a ternary material, and polydimethylsiloxane is grafted onto the titanium dioxide to form a hydrophobic layer. In one aspect, the hydrophobic layer can physically isolate the ternary material from reacting with water and carbon dioxide in the air. In another aspect, when polydimethylsiloxane is grafted onto titanium dioxide, the connection by means of chemical bonds between the two can form a hydrophobic layer more stable than by bonding or in similar approaches. Moreover, a hydrophobic layer formed by polydimethylsiloxane being grafted onto titanium dioxide, compared with directly using siloxane to modify a ternary material, has better hydrophobicity, and more stable durability in long-term electrolyte infiltration, preventing the reaction of HF acid with titanium dioxide or a positive electrode material in the electrolyte, thus enhancing the chemical stability of the positive electrode material as well as battery safety.
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 4/36 - 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 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 lithium nickel manganese oxide positive electrode material, a preparation method therefor and a battery, belonging to the technical field of batteries. With regard to the lithium nickel manganese oxide positive electrode material, constructing a lithium phosphate coating layer and a solid electrolyte coating layer on the surface of a lithium nickel manganese oxide crystal effectively inhibits dissolution of transition metal in the positive electrode material, helping to reduce contact between the surface of the material and an electrolyte, thus reducing the corrosion effect of the electrolyte on the surface of the material, and allowing the material to have more excellent cycle performance. Moreover, the provision of the lithium phosphate layer can effectively reduce the phenomenon of low capacity caused by lithium capture by the solid electrolyte from the positive electrode material, thus achieving the purposes of improving the reversible specific capacity and long cycle performance of the 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 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
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
89.
ACTIVE MATERIAL THREAD, PREPARATION METHOD, AND USE
Disclosed in the present disclosure are an active material thread, a preparation method, and a use. The active material thread is formed by an electrode active material, polyester, a conductive agent, and a binder, the active material thread is woven on a filamentous carrier using the textile technology to form an electrode, and because the active material thread has good mechanical properties, the electrode of such a structure has good conformality, so that material pulverization caused by a volume change of the electrode in the charging and discharging process is inhibited to a certain extent, and cracking of an electrode sheet is inhibited. Compared with a traditional electrode manufactured by direct coating, a mesh electrode can improve the stability of the electrode, and can also improve the conductivity of ions, thereby ensuring the lithium ion transmission rate in the electrochemical process.
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
90.
METHOD FOR REMOVING PHOSPHORUS FROM EXTRACTION WASTEWATER IN HYDROMETALLURGY INDUSTRY
Provided in the present disclosure is a method for removing phosphorus from extraction wastewater in the hydrometallurgy industry. The method comprises the following steps: S1, adjusting the pH of extraction wastewater to 3.5-4.5, adding ferrous sulfate thereto, and then carrying out an ultrasonic treatment to obtain a suspension; S2, carrying out solid-liquid separation on the suspension, taking out the liquid phase, stirring same, adding an acid solution to adjust the pH to 3-3.5, then adding ferrous sulfate and hydrogen peroxide, introducing oxygen and pressurizing same, and heating same to perform a reaction; S3, adding an alkaline solution thereto to adjust the pH to 7.5-8, then sequentially adding a coagulant and a flocculant thereto, carrying out solid-liquid separation, then taking out the liquid phase, adjusting the pH to 6-7, carrying out ozonation, adding aluminum sulfate after the reaction is finished, carrying out solid-liquid separation, and then measuring the phosphorus content of the effluent.
C02F 1/78 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par oxydation au moyen d'ozone
C02F 1/72 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par oxydation
C02F 103/16 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de procédés métallurgiques, c.-à-d. de la production, de la purification ou du traitement de métaux, p. ex. déchets de procédés électrolytiques
91.
ELECTRIC-PULSE DESORPTION RECOVERY METHOD FOR POSITIVE ELECTRODE SHEET OF WASTE LITHIUM-ION BATTERY
An electric-pulse desorption recovery method for a positive electrode sheet of a waste lithium-ion battery. The recovery method comprises the following steps: (1) after discharging the waste lithium-ion battery, disassembling same to obtain a positive electrode sheet, performing high-voltage pulse discharging on the positive electrode sheet, then sorting and screening to obtain a positive electrode material and an aluminium foil; and (2) performing infrared heating on the positive electrode material to obtain a positive electrode material powder, performing hydrothermal lithium-supplementing repair on the positive electrode material powder, and calcining the lithium-supplemented repaired material to obtain a regenerated lithium-ion battery positive electrode material. The recovery method has advantages such as low energy consumption, high efficiency in separating the aluminium foil and the positive electrode material, good dispersibility of positive electrode material particles, and a good hydrothermal lithium-supplementing effect, thus achieving the recovery and reuse of positive electrode sheets of waste lithium-ion batteries.
A preparation method for nickel sulfate and a use thereof, belonging to the technical field of nickel sulfate preparation. The method comprises: reacting carbon dioxide with a nickel-iron alloy to produce a mixed solid containing nickel oxide and ferrous oxide, and a mixed gas containing carbon monoxide; reacting the mixed solid with sulfuric acid to obtain a first mixed solution containing nickel sulfate and ferrous sulfate, and subsequently removing the ferrous sulfate to obtain nickel sulfate. The described method avoids the problem that flammable and explosive hydrogen gas is generated during traditional nickel sulfate preparation by means of acid leaching of nickel-iron alloys, thus improving the safety of the process. The nickel sulfate thereby obtained can be further used to prepare a lithium nickel manganese cobalt oxide battery precursor.
Provided in the present disclosure are a positive electrode material precursor, a preparation method therefor, and the use thereof. The preparation method comprises: mixing a glycine buffer solution containing ethylene glycol with a metal source, and reacting same to obtain the positive electrode material precursor. The present disclosure uses the glycine buffer solution as a reaction substrate solution, and adds the metal source to same for reaction, thereby keeping the pH of the system stable, and improving the uniformity and purity of the metal element. In addition, by means of a synergistic effect between glycine and ethylene glycol, interfacial energy of different crystal planes of the precursor particles can be effectively regulated, thereby regulating the growth and arrangement modes of the precursor particles to enable precipitated particles to preferentially grow in the orientation of (003) crystal planes, so as to obtain elongated strip-shaped primary particles, which can provide a rapid diffusion channel for lithium ions, reduces the diffusion resistance of Li+ and improves the orderliness of the crystal structure, thereby improving the rate capability and the cycling stability of the positive electrode material.
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 4/525 - 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
94.
METHOD FOR RECYCLING AND PREPARING IRON PHOSPHATE FROM IRON PHOSPHATE-CONTAINING COLLECTED DUST MATERIAL, AND USE OF IRON PHOSPHATE
A method for recycling and preparing iron phosphate from an iron phosphate-containing collected dust material, comprising the following steps: sieving an iron phosphate-containing collected dust material, adding water to form a slurry, and carrying out filtering to obtain an anhydrous iron phosphate filter cake; preparing a slurry from the anhydrous iron phosphate filter cake and a phosphoric acid solution, and carrying out heating, recrystallization, and solid-liquid separation to obtain an iron phosphate dihydrate filter cake; and drying and roasting the iron phosphate dihydrate filter cake to obtain anhydrous iron phosphate. The anhydrous iron phosphate prepared using the method has a high tap density, a small particle size, a large specific surface area, and a low impurity content, can effectively improve the electrochemical performance of a battery, and has a wide application prospect.
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
95.
PROCESSING DEVICE FOR LITHIUM BATTERY POSITIVE ELECTRODE MATERIAL
Disclosed is a processing device for a lithium battery positive electrode material, including a base, where the base is fixedly provided with barrel bodies by means of a support, a sleeve is rotatably clamped between the two barrel bodies, a stirring assembly transversely penetrates through interiors of the barrel bodies and the sleeve, the base is further provided with a power mechanism, and the power mechanism separately drives the sleeve and the stirring assembly to rotate. Due to the cooperation of the barrel bodies, the sleeve and the stirring assembly, the stirring assembly can effectively scrape attachments on the inner walls of the barrel bodies, and a first stirring blade in the sleeve and a second stirring blade in the stirring assembly are cooperated to stir, gather and further disperse and disarrange the material, such that the material can be mixed more uniformly.
B01F 29/64 - Mélangeurs à récipients rotatifs tournant autour d'un axe horizontal ou incliné, p. ex. mélangeurs à tambour avec des dispositifs d'agitation se déplaçant par rapport au récipient, p. ex. en tournant
B01F 35/12 - Entretien des mélangeurs utilisant des moyens mécaniques
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.
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.
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
99.
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
100.
TERNARY POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
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
