| 摘要 |
PURPOSE:To obtain high capacity, low equivalent series resistance and low leakage current by so coating in advance with a dielectric oxide film without loss of conductivity with polymer compound, and forming conductive polymer compound thereon. CONSTITUTION:In a solid electrolytic capacitor having conductive polymer compound on a dielectric oxide film, a dielectric oxide film coats in advance without loss of conductivity with polymer compound, and a conductive polymer compound is formed thereon. For example, an aluminum anode foil in which the dielectric oxide film is formed on the surface by compounding is coated with ethanol solution of copolymer of sulfonic acid-containing p-fluorovinyl ether and tetrafluoroethylene as polymer compound, and then dried. Aqueous solution containing 0.2mol/l of pyrrole and 0.1mol/l of naphthalene sulfonic acid is employed as electrolyte, it is electrolytically decomposed in 0.5mA/cm<2> of current density for 2 hours with a platinum plate as a cathode, and recompounded with adipic acid compounding solution after the reaction is finished. |
