Primary battery or secondary battery electrode in which local battery reaction is controlled, and primary battery or secondary battery using the electrode

摘要

Provided is a secondary battery electrode capable of suppressing the memory effect, improving durability, and improving capacity. A primary battery or secondary battery electrode comprising an electrode current collector and an electrode active material layer comprising an electrode active material, wherein the electrode current collector comprises the electrode current collector and (especially during open circuit) A layer made of a material that controls the local battery reaction that occurs between the electrode active material or a layer that consists of a material that controls the local battery reaction that occurs between the electrode current collector and the electrode active material. Have. In particular, it is preferable that the electrode current collector does not contain a material having a base electrode potential larger than that of the electrode active material on the surface.