| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage element that can suppress oxidation of an electrode body to be connected to a current collector and keep the electrical connection between the current collector and the electrode body under an excellent state.SOLUTION: A power storage element comprises an electrode body containing a positive electrode and a negative electrode each having a non-covered region having a metal foil, a current collector having a piece portion 35 superimposed on the non-covered region, and a facing piece 41 that sandwiches the uncovered region together with the piece portion 35. At least one of the non-covered region, the piece portion 35, and the facing piece 41 is a conductive layer which has non-oxidation or oxidation-hard property and covers at least one surface of a surface facing the piece portion 35 in the non-covered region, a surface facing a counter piece 41 in the non-covered region, a surface facing the non-covered region in the piece portion 35, and a surface facing the non-covered region in the counter piece 41.SELECTED DRAWING: Figure 14 |
