Electrodes with silicon oxide active materials for lithium ion cells achieving high capacity, high energy density and long cycle life performance
US11094925B2 · kind B2 · utility
4Cited by
116References
23Claims
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Key dates
| Filing date | Apr 9, 2018 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Feb 24, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Improved negative electrodes can comprise a silicon based active material blended with graphite to provide more stable cycling at high energy densities. In some embodiments, the negative electrodes comprise a blend of polyimide binder mixed with a more elastic polymer binder with a nanoscale carbon conductive additive. The silicon-based blended graphite negative electrodes can be matched with positive electrodes comprising nickel rich lithium nickel manganese cobalt oxides to form high energy density cells with good cycling properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.