| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that there is a case that an alkaline electrolyte solution is leaked when returned from polarity inversion when an alkaline dry cell becomes in an over-discharge state.SOLUTION: In a part of an outer face of a negative electrode current collector 6 of the alkaline dry cell, a recessed part 10 is formed. The recessed part 10 is positioned in the vicinity of a gasket side end face 3A of a negative electrode 3. |
