| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage element in which short-circuit between electrodes is suppressed in spite of the fact that a current collecting base material is bent at the end of both positive electrode and negative electrode.SOLUTION: A power storage element includes a positive electrode and a negative electrode which are formed in a sheet shape as an electrode. The positive electrode and the negative electrode are laminated on each other. Each electrode includes at least a current collecting base material and an active material layer. At least a part of each current collecting base material extends up to the end of each electrode and is bent toward one side in the lamination direction at the end thereof. At the ends of the positive electrode and the negative electrode adjacent to each other, respective lamination directions where the current collecting base material is bent are same as each other. |
