Non-aqueous electrolyte secondary battery
US10340521B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2015 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Jun 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An object of the invention is to provide a nonaqueous electrolyte secondary battery having good cycle characteristics. The nonaqueous electrolyte secondary battery of the present invention includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The positive electrode active material is a layered lithium transition metal oxide, and the positive electrode active material has a crystallite size of 140 nm or less. The negative electrode active material contains at least carbon, and the nonaqueous electrolyte contains 2 to 30% by volume of fluoroethylene carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.