Positive electrode active material for lithium secondary battery and lithium secondary battery
US12119488B2 · kind B2 · utility
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Key dates
| Filing date | Jun 19, 2019 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Aug 26, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a lithium secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte, wherein the positive electrode includes, as a positive electrode active material, a lithium composite transition metal oxide powder having a layered structure and a nickel content accounting for 50 atm % or more of total transition metals, and wherein the layered structure of the positive electrode active material is phase-transformed into a spinel structure at a temperature of 300° C. or more in a fully charged state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.