Nonaqueous electrolyte secondary battery
US9023521B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Feb 1, 2012 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Oct 21, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a nonaqueous electrolyte secondary battery in which a negative-electrode active material containing a graphite material and silicon or a silicon compound is used and which has an excellent charge-discharge cycle characteristic. In the nonaqueous electrolyte secondary battery, the negative-electrode active material used is an active material containing a graphite material and silicon or a silicon compound, and the negative electrode binder used comprises a polyimide and polyvinylpyrrolidone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.