Separator for alkaline secondary battery, method for preparing the same alkaline secondary battery
US6790562B2 · kind B2 · utility
1Cited by
6References
4Claims
0Family size
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Key dates
| Filing date | Mar 15, 2002 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Nov 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2459
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an alkaline secondary battery provided with a positive electrode, a negative electrode, a separator to be interposed between the positive electrode and the negative electrode, and an alkaline electrolyte solution, the above-mentioned separator has carbon-carbon double bonds. Further, an average amount of carbon-carbon double bonds in the separator is in the range of 10 &mgr;mol/g to 200 &mgr;mol/g, and an average amount of increased nitrogen in the separator after the separator is immersed in an alkaline aqueous solution having ammonium salt dissolved therein is not less than 140 &mgr;g/g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.