US 11,949,099 B2
Electrode active material and preparation method thereof, electrode, battery, and apparatus
Chengdu Liang, Ningde (CN); Yongchao Liu, Ningde (CN); Na Liu, Ningde (CN); Yingjie Guan, Ningde (CN); Qisen Huang, Ningde (CN); and Wei Fu, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on Feb. 10, 2023, as Appl. No. 18/108,515.
Application 18/108,515 is a continuation of application No. PCT/CN2020/114477, filed on Sep. 10, 2020.
Prior Publication US 2023/0223521 A1, Jul. 13, 2023
Int. Cl. H01M 4/36 (2006.01); C01G 53/00 (2006.01); H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01)
CPC H01M 4/366 (2013.01) [C01G 53/50 (2013.01); H01M 4/131 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/5825 (2013.01); C01P 2004/51 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electrode active material with a coating layer, comprising:
a core, comprising a ternary material selected from the group consisting of lithium nickel cobalt manganese oxides, lithium nickel cobalt aluminum oxides, and a combination thereof; and
a coating layer disposed on at least part of a surface of the core, wherein the coating layer comprises a reaction product formed by curing a solution disposed on the surface of the core, the solution comprises a solvent, a sulfur-containing compound, and a lithium-containing compound, the sulfur-containing compound is selected from the group consisting of sulfamide, aminomethanesulfonic acid, lithium bisfluorosulfonimide, thio-propionamide, thio-isobutyramide, propylene sulfide, methyl ethyl sulfide, and any combination thereof, and the reaction product comprises Li, S, and O,
wherein a weight content of S in the electrode active material is 500-5000 ppm.