| 摘要 |
A laminated film is used as a battery case to provide a secondary battery having high energy density and high strength. The secondary battery includes: a battery component 1; and an outer member for sealing the battery component 1, wherein the outer member includes a first layered sheet 2 having a first metal layer made of stainless steel and a first plastic layer, and a second layered sheet 3 having a second metal layer made of aluminum-based metal and a second plastic layer, the second layered sheet 3 is provided with a recess as a container part for containing the battery component 1, and the first plastic layer of the first layered sheet 2 and the second plastic layer of the second layered sheet 3 are thermally welded to seal the battery component 1. |
