Positive electrode active material particle including core including lithium cobalt oxide and shell including lithium cobalt phosphate and preparation method thereof
US11056682B2 · kind B2 · utility
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Key dates
| Filing date | Jul 27, 2017 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Apr 18, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a positive electrode active material particle including a core that includes lithium cobalt oxide represented by the following Chemical Formula 1; and a shell that is located on the surface of the core and includes lithium cobalt phosphate represented by the following Chemical Formula 2, wherein the shell has a tetrahedral phase: LiaCo(1-x)MxO2-yAy (1)wherein M is at least one of Ti, Mg, Zn, Si, Al, Zr, V, Mn, Nb, or Ni, A is oxygen-substitutional halogen, and 0.95≤a≤1.05, 0≤x≤0.2, 0≤y≤0.2, and 0≤x+y≤0.2, LibCoPO4 (2)wherein 0≤b≤1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.