Additive for non-aqueous electrolyte and secondary battery using the same
US8349502B2 · kind B2 · utility
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8References
6Claims
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Key dates
| Filing date | Sep 20, 2007 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Dec 23, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is an electrolyte comprising a compound having both a sulfonate group and a cyclic carbonate group. The electrolyte forms a more stable and dense SEI layer on the surface of an anode, and thus improves the capacity maintenance characteristics and lifespan characteristics of a battery. Also, disclosed is a compound represented by the following Formula 1, and a method for preparing the same by reacting 4-(hydroxyalkyl)-1,3-dioxolan-2-one with a sulfonyl halide compound:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.