| abstract |
The present invention provides a surface-treated steel sheet for a battery case having improved electrical contact with a battery positive electrode active material, a method for producing the same, a battery case, and a battery. A surface-treated steel sheet has a graphite-dispersed nickel-plated layer or graphite-dispersed nickel alloy-plated layer in which graphite is dispersed, at least on a surface inside the battery case. It is preferable that a nickel-cobalt alloy, a nickel-cobalt-iron alloy, a nickel-manganese alloy, a nickel-phosphorus alloy, a nickel-bismuth alloy, or the like is formed as the alloy plating layer. The battery case is formed by drawing, DI processing, DTR processing, or the like of the surface-treated steel sheet of the present invention. The battery of the present invention uses this battery case. [Selection diagram] None |