| 摘要 |
<p>Battery case material with which an internal contact resistance between the anode mix and the material is substantially reduced inside a battery case made of it, which has an excellent corrosion-resistance and facilitates the improvement of the battery performance and with which the powdering at the time of the press-forming is suppressed. A battery case which is made of the material, and a battery which is manufactured by using the battery case are also disclosed. The battery case material is a surface-treated steel plate which comprises a steel plate substrate, a nickel-tin-iron diffused layer formed as an outermost layer on the surface of the substrate which is to be the inside surface of the battery case and a nickel-cobalt-iron diffused layer formed as an outermost layer on the surface of the substrate which is to be the outside surface of the battery case. The battery case which is manufactured by, e.g., deep drawing has a nickel-tin-iron diffused layer on its inside surface and has a nickel-cobalt-iron diffused layer on its outside surface. Further, the battery is manufactured by filling the battery case with active material.</p> |
