| 摘要 |
A flat-shaped battery according to the present invention includes: an outer can 5 having an opening at its upper end; a gasket 3 disposed at an inner edge of the opening; and a sealing plate 6 that seals the opening together with the gasket 3. In this flat-shaped battery, the outer can 5 houses a power generation element 2, the sealing plate 6 is fixed to the inner edge of the opening of the outer can 5 via the gasket 3 by caulking, a nickel or nickel-containing plating layer 23 having a thickness in a range from 1 to 10 µm is formed on an outer surface of a base composing the outer can 5, and a gold or gold-containing plating layer 25 is formed on an outer surface of the nickel or nickel-containing plating layer 23. |
