Electrolytic capacitor
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorYasuhiro Tsuda
Life of this patent
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Abstract
An electrolytic capacitor includes a capacitor element and an electrolyte solution. The capacitor element includes: an anode foil provided with a dielectric layer on the anode foil; a cathode foil disposed to face the anode foil; and a conductive polymer layer disposed between the anode foil and the cathode foil. The cathode foil is provided with a first layer disposed on the cathode foil, the first layer including at least one selected from the group consisting of carbon, nickel, a nickel compound, titanium, and a titanium compound. The conductive polymer layer includes a conductive polymer in contact with at least a part of a surface of the first layer. The surface of the first layer has projections and recesses.
Claims9
An electrolytic capacitor comprising:
- a capacitor element;
- and
- an electrolyte solution,
- the capacitor element including:
- an anode foil provided with a dielectric layer on the anode foil;
- a cathode foil disposed to face the anode foil and provided with a first layer on the cathode foil, the first layer including at least one selected from the group consisting of carbon, nickel, a nickel compound, titanium, and a titanium compound;
- and
- a conductive polymer layer disposed between the anode foil and the cathode foil, the conductive polymer layer including a conductive polymer in contact with at least a part of a surface of the first layer, wherein
- the surface of the first layer has projections and recesses.
Dependencies are inferred from the claim text.