Nonaqueous electrolyte secondary battery
US8263263B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Mar 21, 2008 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | May 15, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive electrode active material is made of sodium containing oxide. The sodium containing oxide contains NaALiBMO2±α that belongs to a space group P63/mmc of a hexagonal system, where the M includes at least one of manganese (Mn) and cobalt (Co). In the NaALiBMO2±α, the composition ratio A of sodium (Na) is not less than 0.5 and not more than 1.1, the composition ratio B of lithium (Li) is larger than 0 and not more than 0.3, and the α is not less than 0 and not more than 0.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.