Patent ID: 6982865

Claim:
A solid electrolytic capacitor formed with a dielectric coating and a solid electrolyte layer successively formed on a surface of an anode body; wherein said solid electrolyte layer includes a conductive polymer containing at least a tetrahydronaphthalenesulfonate ion expressed as a general formula (1) (in the formula, m1 represents an integer not less than 0, p represents an integer not less than 1, and R 1 represents an alkyl group having a carbon number of 1–20) and a naphthalenesulfonate ion expressed as a general formula (2) (in the formula, m2 represents an integer not less than 0, q represents an integer not less than 1, and R 2 represents an alkyl group having a carbon number of 1–20, and the formula includes any naphthalenesulfonate ion having an alkyl group and a sulfonate ion group each substituting for a hydrogen atom in at least one of aromatic rings) as dopants.