| 摘要 |
PROBLEM TO BE SOLVED: To provide a conductive polymer with excellent conductivity and heat resistance, and to provide a solid electrolytic capacitor highly reliable under high-temperature and high-humidity conditions by using this conductive polymer as a solid electrolyte. SOLUTION: There is provided a conductive polymer by adding as a dopant at least one or more sulfonic acids selected from tetrahydronaphthalenesulfonic acid containing one or more sulfone groups or alkyltetrahydronaphthalenesulfonic acid containing one or more alkyl groups having 1-18 carbon atoms and one or more sulfone groups. As a monomer for synthesizing the conductive polymer, at least one or more selected from pyrrole, thiophene, and aniline and derivatives thereof are preferable. A solid electrolytic capacitor is provided by using this conductive polymer as a solid electrolyte.
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