| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage element capable of reducing deterioration of performance.SOLUTION: Disclosed is a power storage element 10 which includes an electrode body 400 having a positive electrode 410 and a negative electrode 420. At least one of the positive electrode 410 and the negative electrode 420 includes: a base material layer having a first face and a second face which is a face opposite to the first face; and an active material layer formed on the base material layer. The second face is arranged on the inner side than the first face in a bent part 400a formed by bending the at least one of the positive electrode 410 and the negative electrode 420, and the surface roughness of the second face is larger than that of the first face in the bent part 400a.SELECTED DRAWING: Figure 6 |
