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US 12,119,485 B2Granted
Cathode with coated disordered rocksalt material
AssigneeWildcat Discovery Technologies, Inc.
InventorsTanghong Yi, Bin Li, Sun-Ho Kang, Yunguang Zhu, Han Wang
Life of this patent
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Abstract
A cathode includes a disordered rocksalt phase material and a coating layer disposed on a surface of the disordered rocksalt phase material. The coating layer may include one or more of an oxide, a phosphate, a phosphide, or a fluoride.
Claims20
A cathode comprising:
- a disordered rocksalt phase material, and
- a coating layer disposed on a surface of the disordered rocksalt phase material, the coating layer comprising one or more of a titanium oxide, a lithium metal phosphate, lithium phosphate, a lithium metal oxide, a phosphide and a fluoride.
The cathode of any one of the preceding claims, wherein the coating layer is present at no less than 0.05 wt. % and no greater than 10 wt. % relative to a combined weight of the disordered rocksalt phase material and the coating layer.
A method for forming a cathode, the method comprising:
- mixing a disordered rocksalt phase material with one or more coating precursors to form a mixture, the one or more coating precursors comprising one or more of Al(CH3CO2)3, a phosphate that decomposes during annealing to form a lithium phosphate or lithium metal phosphate, a lithium phosphide, lithium metal phosphide and TiO2;
- and
- annealing the mixture to form a coated disordered rocksalt powder that has a coating layer disposed on a surface of the disordered rocksalt phase material.
Dependencies are inferred from the claim text.