Nickel hydroxide active material powder and nickel positive electrode and alkali storage battery using them
US5700596A · kind A · utility
43Cited by
4References
50Claims
0Family size
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Key dates
| Filing date | Nov 21, 1991 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Nov 21, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The tap density of nickel hydroxide powders is improved, the expansion of a positive electrode is inhibited and the energy density of the positive electrode and the cycle life characteristics are improved by specifying the shape of the nickel hydroxide powders and besides, adding to the nickel hydroxide powders at least one of Cd, Ca, Zn, Mg, Fe, Co and Mn. The nickel hydroxide active material powders contain 1-7 wt % of at least one of Cd, Ca, Zn, Mg, Fe, Co and Mn and comprise a mixture of spherical or nearly spherical particles and non-spherical particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.