Solid electrolytic capacitor
AssigneeSanyo Electric Co., Ltd.
InventorsKazuhito Kikuchi, Kazuhiro Takatani, Mutsumi Yano, Takashi Umemoto, Hiroshi Nonoue
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Abstract
An aspect of the invention provides a solid electrolytic capacitor that comprises: an anode formed of a valve metal or an alloy mainly made of a valve metal; a dielectric layer formed on a surface of the anode; a first conducting polymer layer formed on the dielectric layer, the first conducting polymer layer containing a non-ionic surfactant; a second conducting polymer layer formed on the first conducting polymer layer; and a cathode layer formed on the second conducting polymer layer.
Claims18
A solid electrolytic capacitor comprising:
- an anode formed of any one of a valve metal and an alloy mainly made of a valve metal;
- a dielectric layer formed on a surface of the anode;
- a first conducting polymer layer formed on the dielectric layer, the first conducting polymer layer containing a non-ionic surfactant;
- a second conducting polymer layer formed on the first conducting polymer layer and lacking the non-ionic surfactant;
- and
- a cathode layer formed on the second conducting polymer layer.
A method for manufacturing a solid electrolytic capacitor, comprising:
- forming an anode from any one of a valve metal and an alloy mainly made of a valve metal;
- forming a dielectric layer by anodizing the anode;
- forming a first conducting polymer layer on a surface of the dielectric layer by applying a solution containing a monomer and a non-ionic surfactant to the surface and by then polymerizing the monomer, the first conducting polymer layer containing the non-ionic surfactant;
- forming a second conducting polymer layer that lacks the non-ionic surfactant on the first conducting polymer layer by polymerizing a monomer for forming the second conducting polymer layer;
- and
- forming a cathode layer on the second conducting polymer layer.
Dependencies are inferred from the claim text.