Jar can for secondary battery

摘要

A jar can (3) is formed by deep-drawing a clad material prepared by bonding an aluminum sheet (17) and an iron sheet (18) to each other. A nickel layer (19b) is formed between the iron sheet (18) and the aluminum sheet (17). Another nickel layer (19a) is formed on another surface of the iron sheet (18). Thus, a lightweight jar can for a secondary battery having high rigidity is obtained.