Nonaqueous electrolyte secondary battery
US7455933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2005 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Oct 30, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A nonaqueous electrolyte secondary battery includes a nonaqueous electrolyte and a positive electrode including an active material containing lithium composite oxide powder, the lithium composite oxide powder includes secondary particles, exhibits a peak intensity ratio satisfying the following formula (4), satisfies the following formula (5), and has a particle distribution wherein a particle diameter at a volumetric cumulative frequency of 90% (D90) falls within the range of 10 to 25 m, and the nonaqueous electrolyte contains a sultone compound including a ring having at least one double bond;2≦(I003/I104)<5 (4)0.95≦(XLi/XM)≦1.02. (5)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.