Hydrogen absorbing alloy, electrode thereof and nickel-metal hydride battery
US7309547B2 · kind B2 · utility
1Cited by
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3Claims
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Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Aug 31, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S420/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hydrogen absorbing alloy containing at least a rare-earth element, magnesium (Mg), nickel (Ni) and aluminum (Al), having an intensity ratio (IA/IB) of not smaller than 0.6 (where IA represents an intensity of the highest peak in a range of 2θ=30°˜34° in the X-ray diffraction pattern using CuKα-radiation as the X-ray source and IB represents the intensity of the highest peak in a range of 2θ=40°˜44°), and not substantially including La as the rare-earth element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.