Composite metal oxide material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack and electrical device
US11967706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2022 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Sep 18, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composite metal oxide material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack and an electrical device are provided. The composite metal oxide material includes a central core and a coating layer on the surface of the central core, in which the central core material has a chemical formula of Li5FexM1-xO4, 0.6≤x≤1; the coating layer material has a chemical formula of LiMO2, M is one or more metal elements with +3 valence, and the absolute value of the difference between the +3-valence ion radius of Fe and the +3-valence ion radius of M is ≤0.02 nm. The composite metal oxide material of the present disclosure makes the secondary battery have high charge capacity, high discharge capacity and long cycle life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.