Paste type positive electrode for alkaline storage battery, and nickel-metal hydride storage battery
US6858347B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2000 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Dec 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The paste type positive electrode of the present invention contains a first active material and a second active material. The first active material comprises X parts by weight of particulate nickel hydroxide with aX/100 parts by weight of cobalt oxyhydroxide carried thereon. The second active material comprises Y parts by weight of particulate nickel oxyhydroxide, of which an oxidation number of nickel is α, with bY/100 parts by weight of cobalt oxyhydroxide carried thereon. Here, all the following relations are satisfied: (1) 2.5≦α<3.0, (2) 0.01≦(aX/100+bY/100)/(X+Y)≦0.20, (3) 0<b≦a≦10 or 0=b<a≦10, and (4) 2.1≦(2X+αY)/(X+Y)<2.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.