ELECTRICITY STORAGE DEVICE AND METHOD FOR PRODUCING SAME

摘要

An electricity storage device comprising at least one electrode comprising one metal tab lead and plural electrode plates, wherein the electrode plate comprises a metal foil, an undercoat layer formed on one surface or both surfaces of the metal foil, and an active material layer formed on a surface of the undercoat layer; the undercoat layer comprises a carbon material having a coating weight per unit are of one surface of 0.01 to 3 g/m 2 ; and a of the electrode plates have a total thickness of the metal foils of 0.2 to 2 mm, and are welded to each other and to the metal tab lead in a portion where the undercoat layer is formed.