| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a small-sized and large-capacity solid electrolytic capacitor by a method wherein a conductive function high-molecular film layer is formed on an anodized film layer on the surface of a valve action metal film in an electrolyte, which is an aqueous solution containing a pyrol, a borosisalicylic acid ammonium, a boric acid and a citric acid, and a conductor layer is formed on the high-molecular film layer. SOLUTION: An anodized film layer 1 is formed on the surface of an aluminium foil 3 formed with a valve action metal film with the roughened surface and a conductive function high-molecular film layer 4 is formed on the layer 1 in an electrolyte, which is an aqueous solution containing a pyrol, a borosisalicylic acid ammonium, a boric acid and a citric acid, by an electrolytic oxidation polymerization method. After that, a conductor layer 7 is formed on the layer 4, the part, which is not formed with the layer 4, of the foil 3 is cut in a prescribed length and a capacitor element 8 of a solid electrolytic capacitor is manufactured using this part as an anode terminal part and using the part, which is not formed with the layer 7, of the foil 3 as a cathode terminal part.
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