CPC H01G 9/055 (2013.01) [H01G 9/0032 (2013.01); H01G 9/145 (2013.01)] | 24 Claims |
1. An electrode foil for an electrolytic capacitor, comprising:
a metal porous portion; and a metal core portion continuous to the metal porous portion, wherein
when the metal porous portion is equally divided in three in a thickness direction of the metal porous portion into a first region, a second region, and a third region sequentially from the metal core portion side, the first region has a porosity P1, the second region has a porosity P2, and the third region has a porosity P3, satisfying P1<P2<P3 and P2/P1<P3/P2.
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