| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device which can suppress local application of a load to a region where a positive electrode active material layer faces a negative electrode active material layer.SOLUTION: A secondary battery as a power storage device includes an electrode assembly 14 where a positive electrode sheet having a positive electrode active material layer 21b formed therein, and a negative electrode sheet having a negative electrode active material layer 22b formed therein are laminated while sandwiching a separator 23. A fixing tape 51 for fixing each electrode sheet and the separator is stuck to the outermost part of the electrode assembly 14. The fixing tape 51 has an overlap part 60 where each active material layer 21b, 22b overlaps a facing region 24 in the lamination direction, and the overlap part 60 is non-rectangular. |
