Non-aqueous electrolyte solution for secondary batteries, and lithium ion secondary battery
US9960450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2016 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Jan 28, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide a flame retardant non-aqueous electrolyte solution for secondary batteries, with which a lithium ion secondary battery which is less likely to undergo thermal runaway and which is excellent in the high temperature storage properties can be obtained; and a lithium ion secondary battery using the non-aqueous electrolyte solution for secondary batteries.A non-aqueous electrolyte solution for secondary batteries, comprising an electrolyte salt and a liquid composition,which contains either one or both of monofluorophosphate anions and difluorophosphate anions derived from at least part of the electrolyte salt,wherein at least a lithium salt is contained as one type of the electrolyte salt, andthe liquid composition comprises at least one fluorine-containing solvent (α) selected from the group consisting of a fluorine-containing ether compound, a fluorine-containing chain carboxylic acid ester compound and a fluorine-containing chain carbonate compound, and a cyclic carboxylic acid ester compound. A lithium ion secondary battery using the non-aqueous electrolyte solution for secondary batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.