Negative electrode active material for nonaqueous electrolyte secondary batteries
US9761873B2 · kind B2 · utility
1Cited by
4References
5Claims
0Family size
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Key dates
| Filing date | Jun 25, 2012 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Sep 3, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative electrode active material for nonaqueous secondary batteries is disclosed. The active material contains a silicon solid solution having one or more than one of a group 3 semimetal or metal element, a group 4 semimetal or metal element except silicon, and a group 5 nonmetal or semimetal element incorporated in silicon as a solute element. The solute element is present more on the crystal grain boundaries of the silicon solid solution than inside the grains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.