| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device capable of suppressing an active material from being desorbed in positioning an electrode and capable of suppressing deterioration in positioning accuracy.SOLUTION: In a positive electrode 21 and a negative electrode 24 of a secondary battery, the negative electrode 24 includes an active material that is more easily desorbed from a negative electrode active material layer 26 as compared with the positive electrode 21. The negative electrode 24 has a negative electrode uncoated portion 25e along four sides where the negative electrode active material layer 26 does not exist and a negative electrode metal foil 25 is exposed. The negative electrode 24 includes a ceramic layer 29 covering the surface of the negative electrode uncoated portion 25e.SELECTED DRAWING: Figure 2 |
