Non-aqueous electrolyte secondary battery and electrolyte for the same
US7709157B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2003 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Sep 29, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a safe non-aqueous electrolyte secondary battery with characteristics analogous to those of a conventional battery by minimizing battery expansion that causes damage to a device during high temperature exposure or storage. The non-aqueous electrolyte secondary battery comprises: (a) a chargeable and dischargeable positive electrode; (b) a negative electrode capable of absorbing and desorbing lithium; (c) a separator for preventing direct electron transfer between the positive electrode and the negative electrode; and (d) an non-aqueous electrolyte; the non-aqueous electrolyte comprising a non-aqueous solvent and a solute, the non-aqueous solvent comprising a lactone, the solute comprising lithium bis(fluorosulfonyl)imide represented by the formula (1):(F—O2S—N—SO2—F)Li.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.