| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device including a wound or laminated electrode body in which tabs can be formed easily.SOLUTION: A secondary battery (power storage device) includes an electrode body 10 in which a strip-like positive electrode 11 and a strip-like negative electrode 12, each having at least one surface coated with active material layer 11a, 12a, have a lamination structure with a strip-like separator interposed therebetween. In the strip-like positive electrode 11 and strip-like negative electrode 12, tabs 11b, 12b are formed to protrude from any one side. Rising parts of the tabs 11b, 12b and the margins 11e, 12e extending from the root of the tabs 11b, 12b along one side thereof are connected in smooth shape. |
