Positive electrode material and preparation method therefor, and lithium ion battery
US12148920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2019 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Nov 6, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode material, a preparation method thereof, and a lithium ion battery are provided. The cathode material comprises cathode material particles comprising a central area, an intermediate layer, and a surface layer, wherein the intermediate layer is located between the central area and the surface layer; and the central area comprises a lithium oxide, the intermediate layer comprises elemental sulfur, and the surface layer comprises elemental sulfur and elemental carbon, in which the lithium oxide comprises δLiNimConX(1-m-n)O2·(1−δ)Li2MO3, where 0≤δ≤1, X includes at least one selected from Mn, Al, Nb, and Fe, M includes at least one selected from Mn, Al, Nb, Fe, Co, and Ni, 0≤m<1, and 0≤n<1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.