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 |
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.
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