Liquid electrolyte for lithium accumulator, containing a ternary mixture of non-aqueous organic solvents
US9225040B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2012 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Jun 13, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a liquid electrolyte for a lithium accumulator and the use thereof in a lithium accumulator at low temperature. The liquid electrolyte includes at least one lithium salt dissolved in a mixture of non-aqueous organic solvents. The mixture of organic solvents is formed by propylene carbonate (PC), γ-butyrolactone (GBL) and ethyl methyl carbonate (EMC). The mixture of organic solvents preferably contains between: 0.5% and 33% in volume of propylene carbonate, 0.5% and 33% in volume of γ-butyrolactone and, 0.5% and 99% in volume of ethyl methyl carbonate, the sum of the respective volume percentages of propylene carbonate, γ-butyrolactone, and ethyl methyl carbonate in the mixture being equal to 100%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.