Additive for lithium ion battery and use thereof
AssigneeJiangXi Inspire Nano Materials Co., Ltd
InventorsXiaohong Zhang, Xiang Zeng, Chao Zhang
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Abstract
Disclosed are an additive for a lithium-ion battery and use thereof. The raw materials of the additive for a lithium ion battery have the following parts by weight: 40-70 parts of first solvent; 1-10 parts of first polymer; 5-15 parts of second polymer; 10-20 parts of small molecule organic amine; and 10-20 parts of stabilizer. The first polymer contains at least one nitrogen-free polar functional group; the second polymer contains at least one nitrogen-containing polar functional group; and the stabilizer is a hydrazine compound. The additive provided in the present disclosure is used in lithium-ion batteries to solve the problem of easy cracking of thick electrodes and difficult dispersion of cathode particles.
Claims19
An additive for a lithium ion battery, the additive being free of conductive material, wherein raw materials of the additive have following parts by weight:
- first solvent
- 40-70;
- first polymer
- 1-10;
- second polymer
- 5-15;
- small molecule organic amine
- 10-20;
- and
- stabilizer
- 10-20;
- wherein the first polymer has at least one nitrogen-free polar functional group, with polyethylene as a main chain, and the first polymer is at least one of the following:
- ethyl cellulose, polyvinyl alcohol, polyvinyl butyral, ethylene-vinyl alcohol copolymer, and methyl vinyl ether-maleic anhydride linear copolymer;
- wherein the second polymer has a nitrogen-containing polar functional group, and the second polymer is at least one of the following:
- polyvinyl pyrrolidone, hydrogenated nitrile rubber, polyacrylonitrile, polypyrrole, and styrene-acrylonitrile-acrylic acid copolymer;
- and
- the stabilizer is a hydrazine compound;
- wherein the stabilizer is at least one of the following:
- hydroxyethylhydrazine, hydrazine hydrate and carbohydrazide, and the nitrogen-free polar functional group is one of the following:
- aldehyde, hydroxyl, carbonyl, and acid anhydride.
Dependencies are inferred from the claim text.