Cathode materials for secondary batteries
US11735710B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Feb 14, 2020 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Nov 26, 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 comprising: a cathode active material of formula LiNixMnyCozO2 or NaNixMnyCozO2 and having a partial or whole particle concentration gradient, wherein at least two or three elements concentration gradually change in the part or whole particle from the center part to the surface part of the particle (i.e. along a vector radius); 0.5<x≤1, 0≤y≤0.33, 0≤z≤0.33.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.