Nonaqueous electrolyte secondary battery
US7455932B2 · kind B2 · utility
1Cited by
1References
8Claims
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Key dates
| Filing date | Jan 15, 2004 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Apr 29, 2024 |
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 wherein a material capable of occluding/discharging lithium is used as a negative electrode material and a lithium-transition metal composite oxide which contains Ni and Mn as the transition metal and has a layered structure is used as a positive electrode material is characterized in that a lithium-transition metal composite oxide having a BET specific surface area less than 3 m2/g and a pH of 11.0 or less when 5 g of the lithium-transition metal composite oxide is immersed in 50 ml of purified water is used as the positive electrode active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.