Lithium ion battery with high voltage electrolytes and additives
US8993177B2 · kind B2 · utility
5Cited by
96References
23Claims
0Family size
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Key dates
| Filing date | Dec 4, 2009 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Aug 4, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Desirable electrolyte compositions are described that are suitable for high voltage lithium ion batteries with a rated charge voltage at least about 4.45 volts. The electrolyte compositions can comprise ethylene carbonate and solvent composition selected from the group consisting of dimethyl carbonate, methyl ethyl carbonate, γ-butyrolactone, γ-valerolactone or a combination thereof. The electrolyte can further comprise a stabilization additive. The electrolytes can be effectively used with lithium rich positive electrode active materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.