Positive electrode active material for lithium secondary battery and method for preparing the same
US11424447B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Nov 22, 2018 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Sep 3, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive electrode active material for a lithium secondary battery is provided having a secondary particle formed by agglomerating a plurality of polycrystalline primary particles including a lithium composite metal oxide of Chemical Formula 1, wherein an average crystallite size of the primary particle is 180 to 400 nm, a particle size D50 of the primary particle is 1.5 to 3μm, and the primary particle is doped or surface-coated with at least one element M selected from the group consisting Al, Ti, Mg, Zr, Y, Sr, and B in an amount of 3,800 to 7,000 ppm: Lia(NixMnyCozAw)O2+b [Chemical Formula 1].
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.