Patent ID: 7742281

Claim:
A solid electrolytic capacitor comprising a dielectric coating film, a solid electrolytic layer, and a cathode lead-out layer on a peripheral surface of an anode body in this order, wherein said solid electrolytic layer comprises at least a first electrolytically polymerized layer arranged on said dielectric coating film side and formed by electrolytic polymerization of a monomer, and a second electrolytically polymerized layer arranged on a side closer to said cathode lead-out layer than said first electrolytically polymerized layer and formed by electrolytic polymerization of the same monomer as the monomer used in a formation of said first electrolytically polymerized layer, said first electrolytically polymerized layer contains a first dopant, and said second electrolytically polymerized layer contains a second dopant different from said first dopant, said first dopant is an alkyl aromatic sulfonate ion, an adamantane sulfonate ion, or an adamantane carboxylate ion, and said second dopant is an aromatic polysulfonate ion, a carbonyl aromatic sulfonate ion, or an aromatic quinone sulfonate ion.