Lithium secondary battery
US12062777B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Jan 23, 2020 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Nov 22, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a lithium secondary battery which includes a positive electrode including a first lithium cobalt oxide and a second lithium cobalt oxide which have different average particle diameters (D50) from each other, a negative electrode including first graphite and second graphite which have different average particle diameters (D50) from each other, and an electrolyte including a a first additive as a nitrile-based compound, wherein the first lithium cobalt oxide and the second lithium cobalt oxide each independently contain aluminum in a concentration of 2,500 ppm to 4,000 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.