Positive active material for alkaline electrolyte storage battery nickel electrodes
US6455197B1 · kind B1 · utility
2Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2000 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Nov 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive active material for nickel electrodes of alkaline storage batteries consists of particles of hydroxide containing mainly nickel and covered with a layer of a hydroxide phase based on nickel and yttrium. The proportion of the hydroxide phase is in the range 0.15% to 3% by weight of yttrium expressed as yttrium hydroxide relative to the total weight of particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.