▎ 摘　　要

NOVELTY - The method involves providing a nickel-plated steel sheet or strip. A graphene based coating layer is applied on the nickel-plated steel sheet or strip. The graphene based coating layer is applied by chemical vapor deposition. The nickel-plated steel sheet or strip is brought in an enclosure. The content of the enclosure is heated. The graphene precursor is supplied into the enclosure. The graphene precursor is a carbon containing solid or gas or from the group of acetylene, methane and ethylene gas. USE - Method for manufacturing steel sheet or steel strip for battery case. ADVANTAGE - The method for manufacturing steel sheet or steel strip for battery case has increased corrosion resistance and the elimination of an extra step of spraying graphite paint on internal side of battery can or casing is achieved and effectively applies a graphene based coating on a steel sheet or steel strip. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a nickel-plated steel sheet for a battery case. DESCRIPTION OF DRAWING(S) - The drawing shows a graph of contact resistance of various graphene coated samples.