Nonaqueous electrolyte and nonaqueous electrolyte energy storage device
US11450888B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 10, 2018 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Jun 20, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
One aspect of the present invention is a nonaqueous electrolyte for an energy storage device comprising: an alkali metal salt; a first aprotic organic solvent coordinating to an alkali metal ion in the alkali metal salt, and not including a fluorine atom; a second aprotic organic solvent including a fluorine atom; and an additive comprising a polar group and a group including a fluorine atom, wherein a content of the alkali metal salt is no less than 0.9 mol/kg and less than 2 mol/kg, a content of the first aprotic organic solvent with respect to the content of the alkali metal salt in terms of a molar ratio is no less than 0.7 and no greater than 4, and a content of the second aprotic organic solvent with respect to a total amount of the first aprotic organic solvent, the second aprotic organic solvent and the additive is no less than 40% by volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.