Bipolar electrode for metal hydride battery, metal hydride battery equipped with bipolar electrode, method for producing bipolar electrode for metal hydride battery, and method for producing metal hydride battery

A method for producing a bipolar electrode for a metal hydride battery, the method comprising:

• a step of forming a current collector including a steel sheet and a Ni—Fe alloy layer, including
• providing a Ni layer on at least one of opposite surfaces of the steel sheet, and
• heat-treating the steel sheet on which the Ni layer is provided to diffuse Ni in the Ni layer and Fe in the steel sheet, thereby forming the Ni—Fe alloy layer;
• a step of forming a negative electrode active material layer on a first surface of the formed current collector;
• and
• a step of providing a positive electrode active material layer on a second surface of the current collector.