Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same
US11417875B2 · kind B2 · utility
1Cited by
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21Claims
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Key dates
| Filing date | Oct 31, 2019 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Sep 5, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive active material for a rechargeable lithium battery includes a nickel-based lithium transition metal oxide including a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle includes a core and a surface layer surrounding the core, and the surface layer includes a plurality of primary particles and a nano-sized cobalt-based lithium transition metal oxide absorbed in the surface layer, between the primary particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.