Electrode foil for high-performance electrolytic capacitors with high reliability
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorHideyuki Kurahashi
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Abstract
An electrode foil for an electrolytic capacitor includes a porous portion, and a core portion continuous with the porous portion. When the porous portion is equally divided in three in the thickness direction of the porous portion into a first region, a second region, and a third region sequentially from the outer surface side of the porous portion, 1.1≤L2/L1, and 1.1≤L2/L3 are satisfied, where the L1 represents a pit perimeter length in the first region, the L2 represents a pit perimeter length in the second region, and the L3 represents a pit perimeter length in the third region.
Claims9
An electrode foil for an electrolytic capacitor, comprising:
- a porous portion;
- and a core portion continuous with the porous portion, wherein
- 1.1≤L2/L1, and 1.1≤L2/L3 are satisfied, where
- when the porous portion is equally divided in three in a thickness direction of the porous portion into a first region, a second region, and a third region sequentially from an outer surface side of the porous portion, the L1 represents a pit perimeter length in the first region, the L2 represents a pit perimeter length in the second region, and the L3 represents a pit perimeter length in the third region, and
- a thickness of the porous portion is 10 μm to 160 μm, or 1/10 or more and 5/10 or less of a thickness of the electrode foil for an electrolytic capacitor.
Dependencies are inferred from the claim text.