Patent ID: 11967706
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A composite metal oxide material used for a positive electrode of a secondary battery, wherein the composite metal oxide material is in a form of a particle and comprises:
a central core, wherein the central core comprises a material having a chemical formula of Li5FexM1−xO4, wherein 0.6≤x<1; and
a coating layer on a surface of the central core, wherein the coating layer comprises a material having a chemical formula of LiMO2; and,
wherein M is one or more metal elements different from Fe and with +3 valence, and an absolute value of the difference between +3-valence ion radius of Fe and +3-valence ion radius of M is ≤0.02 nm.