| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a solid electrolytic capacitor using a polymerization solution for forming a solid electrolyte with which a large capacitance can be achieved, an impededance characteristic in a high-frequency range can be improved, and electrolytic polymerization time can be shortened while maintaining a leakage current characteristic. SOLUTION: An anionic surfactant of a molecular weight of 180 or larger, having a polymeric monomer and an alkyl group or an aromatic ring is mixed beforehand, and water, which is main solvent, is added to the mixture to obtain a solution. A pH regulator is added to adjust the solution to be pH 5 or lower, and thus a polymerization solution for forming a solid electrolyte is prepared. By using the polymerization solution, a solid electrolytic layer 8 is formed on a dielectric oxide film 7 formed on a surface of valve action metal by electrolytic polymerization so that the anionic surfactant is selectively taken in the solid electrolyte as a dopant. |
