| 摘要 |
PROBLEM TO BE SOLVED: To increase the capacity of an electrochemical element, and besides, to suppress the increase of the inner resistance. SOLUTION: In a collector 1, a die-cutting mold is brought into fast contact with a metallic foil 6 in A direction, and is pressed. At this time, a fine hole 3A is made by performing the die cutting as to the side 31A, and a foil piece 4A is projected in A direction, and a projection 4 is made continuous with the body 2 of the metallic foil 6, at one side 30A of the end of the fine hole 3A. At the same time, the die-cutting mold is pressed, being pressure-bonded in B direction, so as to form a triangular fine hole 3B, and the foil piece 4B is projected in B direction, and the projection 4B is made continuous with the body 2, at one side 30B of one end of the fine hole 38. Next, paste layers 8A and 8B are made on both sides of the collector 1, and are half dried to form an assembly 7. Pressure is applied to this assembly so as to manufacture an active member 11. |
