JP2790100B

PURPOSE: To prevent an oxide film from being damaged by a stress during armoring and to prevent a leakage current from increasing in a solid-state electrolytic capacitor wherein conductive high polymer is solid-state electrolyte. CONSTITUTION: A first solid-state electrolyte layer 3 consisting of conductive high polymer alone by chemical polymerization is formed on an oxide film 2 formed in a surface of a metallic anode body 1 with valve function. Then, chemical polymerization is performed by using liquid wherein fine powder consisting of a material which is harder than conductive high polymer is dispersed in reaction liquid of chemical polarization for forming a second solid- state electrolyte layer 4 consisting of conductive high polymer containing fine powder on the first solid-state electrolyte layer 3. Thereby, even if stress is generated when resin armor 8 is hardened, stress is prevented from being applied to the oxide film 2 by the solid-state electrolyte layer 4 consisting of conductive high polymer containing fine powder and increase of leakage current is restrained.