Electrode active material and preparation method thereof, electrode, battery, and apparatus
AssigneeContemporary Amperex Technology Co., Limited
InventorsChengdu Liang, Yongchao Liu, Na Liu, Yingjie Guan, Qisen Huang, Wei Fu
Life of this patent
Estimating the term…
Abstract
The present invention relates to an electrode active material, a preparation method thereof, an electrode, a battery, and an apparatus. The electrode active material includes: a core and a coating layer, where the core includes a ternary material, the coating layer coats the core, the coating layer includes a reaction product of a sulfur-containing compound and a lithium-containing compound, and the reaction product includes element Li, element S, and element O.
Claims20
An electrode active material comprising:
- a core comprising a ternary material selected from the group consisting of lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, and a combination thereof;
- and
- a coating layer disposed on at least part of a surface of the core, wherein the coating layer is formed by curing a solution disposed on the surface of the core, the solution comprises an organic sulfur-containing compound, and the coating layer is a reaction product of the organic sulfur-containing compound and comprises Li, S, and O.
A method of making an electrode active material comprising a core and a coating layer, the method comprising:
- providing a core comprising a ternary material selected from the group consisting of lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, or a combination thereof;
- providing a solution comprising an organic sulfur-containing compound, the organic sulfur-containing compound;
- applying the solution on at least a surface of the core;
- and
- curing the solution to form the coating layer disposed on the surface of the core,
- wherein the coating layer comprises a reaction product of the organic sulfur-containing compound, and the reaction product comprises Li, S, and O.
Dependencies are inferred from the claim text.