WANHUA CHEMICAL GROUP BATTERY TECHNOLOGY CO., LTD (Chine)
Inventeur(s)
Zhao, Kun
Sui, Jianfei
Jin, Yunquan
Sun, Yongjian
Ji, Xueshun
Sun, Jiakuan
Abrégé
The present application provides an aqueous polyurethane dispersion, a preparation method therefor and a use thereof. Raw materials of the aqueous polyurethane dispersion comprise a hydrogenated polybutadiene polyol and a polyisocyanate, wherein the mass percentage content of a hydrogenated 1,2-vinyl unit in the hydrogenated polybutadiene polyol is not higher than 85%. By selecting the hydrogenated polybutadiene polyol as a soft segment and defining the mass percentage content of the hydrogenated 1,2-vinyl unit in the hydrogenated polybutadiene polyol to be not higher than 85%, the obtained aqueous polyurethane dispersion can have both excellent solvent resistance and mechanical properties, have a relatively high modulus, breaking strength, and elongation at break, and can be used as an automotive interior adhesive, an electronic adhesive, or a battery adhesive.
WANHUA CHEMICAL (YANTAI) BATTERY MATERIAL SCIENCE CO., LTD (Chine)
WANHUA CHEMICAL GROUP BATTERY TECHNOLOGY CO., LTD (Chine)
Inventeur(s)
Wang, Yu
Huang, Qishun
Chen, Xiao
Wang, Xuncai
Abrégé
A preparation method for a lithium manganese iron phosphate positive electrode material, comprising the following steps: (1) uniformly stirring an iron source, a phosphorus source, a lithium source and a dispersing agent in water, adding a manganese source, and uniformly mixing same to obtain a precursor pre-slurry; and (2) adjusting the solid content of the precursor pre-slurry to reach a target solid content A, the target solid content A satisfying 30 wt% ≤ A ≤ 60 wt%; (3) carrying out primary grinding treatment on the precursor slurry obtained in step (2); and (4) adding an organic phosphine scale and corrosion inhibitor to the precursor slurry, dissolving same, then drying the obtained slurry, and performing sintering and crushing to obtain the lithium manganese iron phosphate positive electrode material. Also provided is a positive electrode material prepared by the method.
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
3.
SOLUTION TYPE BINDER, PREPARATION METHOD THEREFOR, AND USE THEREOF
WANHUA CHEMICAL (YANTAI) BATTERY MATERIAL SCIENCE CO., LTD (Chine)
WANHUA CHEMICAL GROUP BATTERY TECHNOLOGY CO., LTD (Chine)
Inventeur(s)
Wang, Xiao
Ma, Jiquan
Jia, Yuanfeng
Yuan, Man
Sun, Yongjian
Ji, Xueshun
Sun, Jiakuan
Abrégé
The present application discloses a solution type binder, a preparation method therefor, and a use thereof. The preparation of the binder mainly comprises the following steps: first, carrying out emulsion polymerization on an alkyl acrylate monomer, a nitrile monomer, and a functional monomer acid to prepare latex particles, wherein the latex particles are uniform in particle size and rich in polar functional groups, and can be used as seeds for precipitation polymerization; using the nitrile monomer, the functional monomer acid, acrylamide, etc. as precipitation polymerization monomers, and depositing an oligomer, which is generated by reaction, on the surface of a seed polymer under the action of hydrogen bonds and hydrophobicity to form precipitation particles; and neutralizing the precipitation particles and alkali liquor to obtain the solution type binder. The solution type binder provided by the present application is suitable for a negative electrode of a lithium ion battery, and has high bonding strength, a low electrolyte swelling degree, certain processing flexibility, a simple preparation process, and good batch stability.
C08F 265/04 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères d'acides monocarboxyliques non saturés ou de leurs dérivés tels que définis dans le groupe sur des polymères d'esters
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
H01M 4/13 - Électrodes pour accumulateurs à électrolyte non aqueux, p. ex. pour accumulateurs au lithiumLeurs procédés de fabrication
H01M 4/133 - Électrodes à base de matériau carboné, p. ex. composés d'intercalation du graphite ou CFx
H01M 4/134 - Électrodes à base de métaux, de Si ou d'alliages
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 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
C08F 285/00 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères greffés préformés
C08F 283/06 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères prévus par la sous-classe sur des polyéthers, des polyoxyméthylènes ou des polyacétals
C08F 220/18 - Esters des alcools ou des phénols monohydriques des phénols ou des alcools contenant plusieurs atomes de carbone avec l'acide acrylique ou l'acide méthacrylique
C08F 220/06 - Acide acryliqueAcide méthacryliqueLeurs sels métalliques ou leurs sels d'ammonium
C08F 220/48 - Acrylonitrile avec des monomères contenant de l'azote
WANHUA CHEMICAL (YANTAI) BATTERY MATERIAL SCIENCE CO.,LTD (Chine)
WANHUA CHEMICAL GROUP BATTERY TECHNOLOGY CO., LTD (Chine)
Inventeur(s)
Liu, Yiqun
Zhang, Jie
Wang, Shuaigang
Abrégé
abcdeff, the composite oxide shows no less than two characteristic peaks under magic-angle spinning solid-state nuclear magnetic resonance (MAS ssNMR), the chemical shift of a characteristic peak 1 thereof is located at 600-800 ppm, and the chemical shift of a characteristic peak 2 is located at -50 to 50 ppm, wherein the integral area of the peak 1 is S1, the integral area of the peak 2 is S2, and S1/S2>1000. The lithium ion battery positive electrode active material has an excellent layered structure, and a local environment where more lithium ions are located is beneficial to lithium ion deintercalation and has a lower deintercalation barrier. Compared with the prior art, the present invention exhibits a higher discharge capacity and 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 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
5.
LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND USE THEREOF
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
6.
LITHIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL PRECURSOR AND PREPARATION METHOD THEREFOR
WANHUA CHEMICAL GROUP BATTERY TECHNOLOGY CO., LTD (Chine)
WANHUA CHEMICAL (YANTAI) BATTERY MATERIAL SCIENCE CO.,LTD (Chine)
Inventeur(s)
Liu, Yiqun
Zhang, Jie
Zhang, Ruchao
An, Xiaokun
Jiang, Yuliang
Wang, Shuaigang
Sun, Jiakuan
Abrégé
abcdee, wherein 0 < a ≤ 1, 0 ≤ b ≤ 1, 0 ≤ c ≤ 1, 0 ≤ d ≤ 1, 1.8 ≤ e ≤ 2.2, and a + b + c + d = 1, and the lithium-ion battery positive electrode material precursor has a layered structure, has an XRD peak intensity ratio of I (101)/I (001) < 0.75, and has a grain size ratio of D (102)/D (001) < 0.65. The positive electrode material of the lithium-ion battery, which material is prepared by using the precursor, has a high capacity and excellent cycling 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
7.
HIGH-PRESSURE-RESISTANT TERNARY POLYCRYSTALLINE POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR
WANHUA CHEMICAL GROUP BATTERY TECHNOLOGY CO., LTD (Chine)
Inventeur(s)
Wang, Shuaigang
Liu, Yiqun
Zhang, Jie
Abrégé
A high-pressure-resistant ternary polycrystalline positive electrode material, and a preparation method therefor. The high-pressure-resistant ternary polycrystalline positive electrode material comprises: a ternary polycrystalline positive electrode substrate material and a sodium tungstate compound located at the grain boundaries of the ternary polycrystalline positive electrode substrate material. The method for preparing the high-pressure-resistant ternary polycrystalline positive electrode material comprises: mixing a ternary precursor, a lithium source, and a tungsten-containing compound, and performing first sintering to obtain a polycrystalline positive electrode material enriched with a lithium tungstate compound at the grain boundaries; mixing the polycrystalline positive electrode material with a sodium source, and performing second sintering to obtain a high-pressure-resistant ternary polycrystalline positive electrode material. Beneficial effect: forming a buffer layer compound/sodium tungstate material with relatively low hardness at the grain boundaries of a polycrystalline positive electrode material makes it so that a polycrystalline secondary ball material, under high powder compaction or pole piece compaction, does not easily break at the grain boundaries due to being hard and brittle, thereby improving the pressure resistance of the polycrystalline positive electrode material.
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p. ex. LiTi2O4 ou LiTi2OxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
8.
CONTINUOUS REACTION VESSEL AND APPLICATION THEREOF
WANHUA CHEMICAL GROUP BATTERY TECHNOLOGY CO., LTD (Chine)
Inventeur(s)
Zhang, Jie
Liu, Yiqun
Jiang, Yuliang
An, Xiaokun
Zhang, Ruchao
Dong, Lintao
Abrégé
A continuous reaction vessel and an application thereof. The continuous reaction vessel comprises a vessel body (1), a vessel cover (2), a flow guide cylinder (3), a stirring mechanism (4), a main material first feeding pipe (1a), a main material second feeding pipe (1b), a precipitant solution first feeding pipe (2a), a precipitant solution second feeding pipe (2b), and a complexing agent solution feeding pipe (c). The main material first feeding pipe (1a) extends into the flow guide cylinder (3). The main material second feeding pipe (1b) extends between the flow guide cylinder (3) and the vessel body (1). The precipitant solution first feeding pipe (2a) extends into the flow guide cylinder (3). The precipitant solution second feeding pipe (2b) extends between the flow guide cylinder (3) and the vessel body (1). The complexing agent solution feeding pipe (c) extends into the flow guide cylinder (3). When a ternary precursor is prepared using the continuous reaction vessel, the particle size distribution in the reaction vessel can be controlled by adjusting the flow of different feed inlets in different periods, so that continuous production in a single vessel can be realized, and extreme values and proper particle size distributions of products D0.001 and D99.999 are effectively controlled.
B01J 19/18 - Réacteurs fixes avec éléments internes mobiles
B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation
B01J 8/10 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules mobiles mues par des agitateurs ou par des tambours rotatifs ou par des récipients tournants