| 摘要 |
PROBLEM TO BE SOLVED: To prevent a catalyst layer from collapsing in an air cell, in which the catalyst layer consisting of an oxygen reduction catalyst and a collector body and an air electrode consisting of a gas diffusion layer, are arranged inside a positive electrode case. SOLUTION: By using an air electrode stamping punch 14 possessing a projection step part 15 on an air electrode abutting face, the air electrode is formed into a truncated cone shape with a larger diameter of a collector body larger than a catalyst part, and the truncated cone shape air electrode is used. As the collector body diameter, that is, a bottom part 17 of the air electrode is large, sufficient contact with a positive electrode case can be secured, and on the other hand, application of friction with the positive electrode case inside wall is suppressed in insertion of the air electrode into the positive electrode case as the diameter of a top face 18 in the catalyst part is small, so that electrically stable and highly fluid-leakage-resistant battery, in which the catalyst layer is prevented from collapsing and being clamped and excellent fluid- tightness is provided, can be provided stably. |
