Cathode active material for high voltage lithium secondary battery and lithium secondary battery including the same
US9761864B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Sep 24, 2014 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Mar 21, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are a cathode active material for high voltage lithium secondary batteries and a lithium secondary battery including the same and, more particularly, the present invention relates to a cathode active material for lithium secondary batteries that includes a lithium transition metal oxide having a lithium molar fraction of greater than 1, containing a relative excess of nickel, and having a composition represented by Formula 1 below, wherein the lithium transition metal oxide has a Li2MnO3-like structure phase:Li1+aNibCocMn1−(a+b+c+d)MdO2-tAt (1)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.