Hydrogen absorption alloy electrode
US7070644B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Jun 1, 2004 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Jul 16, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 μm≦R1≦20 μm, or preferably 5 μm≦R1≦12.5 μm, where R1 is a half of a median diameter of the particles and R2 is thickness of the surface layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.