Positive active material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery comprising same
US6924064B2 · kind B2 · utility
8Cited by
5References
9Claims
0Family size
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Key dates
| Filing date | Nov 5, 2001 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Aug 27, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive active material for non-aqueous electrolyte secondary battery is provided comprising lithium manganese oxide having such a spinel structure that the half-width (2θ) of the reflection peak corresponding to 440 plane as determined by X-ray diffractometry using CuKα ray is not greater than 0.145°. The use of this positive active material makes it possible to obtain a secondary battery which exhibits a good cycle life performance at room temperature and high temperatures and a reduced capacity drop when stored at high temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.