Non-aqueous electrolyte secondary battery
US7635542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2007 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Oct 30, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte comprising an electrolyte dissolved in a non-aqueous solvent. The negative electrode uses a low crystalline carbon coated graphite in which at least part of the surface of graphite is coated with a low crystalline carbon material having lower crystallinity than that of graphite as a negative electrode active material, and the non-aqueous electrolyte comprises a lithium salt which has oxalate complex as an anion, in addition to a mixed solvent of propylene carbonate and chain carbonate as a non-aqueous solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.