| 摘要 |
PROBLEM TO BE SOLVED: To prevent a coating material from dropping in powder from an electrode plate and preventing the electrode plate from being folded, when the electrode plate is dropped in a standing state to be stacked.SOLUTION: A negative electrode plate 30 (first electrode plate) includes a negative electrode active material layer non-formation region 36 (first negative electrode non-formation region) where a negative electrode active material layer 34 (first active material layer ) is not formed, around a base 30b, a left side 30c, and a right side 30d. In the negative electrode active material layer non-formation region, a reinforcement martial layer 38 having a peel strength higher than that of the negative electrode active material layer is formed.SELECTED DRAWING: Figure 3 |
