Negative active material for rechargeable lithium battery and rechargeable lithium battery including same
US10991939B2 · kind B2 · utility
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3References
14Claims
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Key dates
| Filing date | Nov 5, 2018 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Jun 27, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative active material for a rechargeable lithium battery includes a silicon-carbon composite including crystalline carbon and a silicon particle. The silicon-carbon composite further includes an alkali metal or an alkaline-earth metal. The alkali metal or the alkaline-earth metal is present in the silicon-carbon composite in an amount of greater than or equal to about 500 ppm and less than about 5,000 ppm by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.