Low cost Si-based negative electrodes with enhanced cycling performance
US9692044B2 · kind B2 · utility
28Cited by
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7Claims
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Key dates
| Filing date | Apr 4, 2013 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Aug 8, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rechargeable battery comprising a positive electrode, a negative electrode and an electrolyte, wherein: —the electrolyte comprises a SEI film-forming agent, and—the negative electrode comprises a micrometric Si based active material, a polymeric binder material and a conductive agent, wherein at least part of the surface of the Si based active material consists of Si—OCO—R groups, Si being part of the active material, and R being the polymeric chain of the binder material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.