Surface-treated steel sheet for battery cases, method of producing same, battery case, and battery
US9017862B2 · kind B2 · utility
1Cited by
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6Claims
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Key dates
| Filing date | Jul 4, 2012 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Jul 4, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A surface-treated steel sheet for battery cases is provided which comprises a nickel-cobalt alloy layer formed at the outermost surface of a plane to be an inner surface of a battery case. When X-ray diffraction measurement using CuKα as a radiation source is performed for the nickel-cobalt alloy layer, an intensity ratio IA/IB=0.01 to 0.9. The intensity ratio IA/IB is a ratio of an intensity IA of a peak present at a diffraction angle 2θ within a range of 41° or more and less than 43° to an intensity IB of a peak present at a diffraction angle 2θ within a range of 43° or more and 45° or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.