Positive electrode active material, positive electrode active material composition and lithium ion secondary battery
US6589694B1 · kind B1 · utility
32Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2000 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | May 12, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a positive electrode active material, a negative electrode active material and an electrolyte that are used alone or in combination to improve charge and discharge cycle characteristic, low temperature characteristic and safety of a non-aqueous electrolyic secondary battery, particularly a lithium ion secondary battery. Specifically, a particulate Li-transition metal composite oxide having an average particle size of not less than 10 &mgr;m, wherein [20/(specific surface area×average particle size)]=7-9, is used as a positive electrode active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.