Silicon oxide material, making method, negative electrode, lithium ion secondary battery, and electrochemical capacitor
US9484159B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Dec 9, 2013 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Jul 22, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A silicon oxide material having a cobalt content of 2-200 ppm is provided. A negative electrode is formed using the silicon oxide material as active material. A nonaqueous electrolyte secondary battery constructed using the negative electrode exhibits improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.