Positive electrode active material for lithium secondary batteries, positive electrode for lithium secondary batteries, and lithium secondary battery
US11417879B2 · kind B2 · utility
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2References
12Claims
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Key dates
| Filing date | Aug 31, 2017 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Dec 3, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a positive electrode active material for a lithium secondary battery, including a lithium composite metal oxide in a form of secondary particles formed by aggregation of primary particles, wherein the secondary particles have voids in interior thereof and a number of the voids with cross section thereof present per 1 μm2 of cross section of the secondary particles is 0.3 or more and 15 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.