| 摘要 |
PROBLEM TO BE SOLVED: To inhibit occurrence of wrinkles in each layer composing an electrode body, while preventing contact of foreign matter with a positive electrode sheet and/or negative electrode sheet of the electrode body of a power storage element.SOLUTION: A power storage element 1 comprises an electrode body 5 in which a positive electrode sheet 11, a negative electrode sheet 12, and first and second separators 13, 14 are placed one on another such that the first or second separator 13, 14 is interposed between the positive electrode sheet 11 and the negative electrode sheet 12. The electrode body 5 has a joint part 26 in which the respective other-end side parts of the first and second separators 13, 14 in the longitudinal direction thereof are joined such that at least the positive electrode sheet 11 or negative electrode sheet 12 is wrapped by the first and second separators 13, 14. |
