Hydrogen storage alloy powder and an electrode comprising the same
US5968225A · kind A · utility
2Cited by
2References
8Claims
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Key dates
| Filing date | Nov 18, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Nov 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S420/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A powder of a hydrogen storage alloy which comprises metallic nickel in or on the surfaces of the powder in an amount sufficient to impart a magnetization intensity of 0.5 to 6 emu/g to the powder. The powder has a specific surface area of 0.15 to 0.7 m.sup.2 /g when determined according to a BET adsorption method, an oxygen concentration of 0.15 to 1.5 wt %, and an average particle size of 10 to 100 .mu.m, with a size distribution wherein the content of particles having a size of 8 .mu.m or below is in the range of 30 wt % or below. An electrode for secondary cells is also described, which comprises the powder defined above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.