SOLID ELECTROLYTE CAPACITOR HAVING CONDUCTIVE POLYMER COMPOUNDS AS SOLID ELECTROLYTE AND METHOD OF MANUFACTURING THE...

摘要

The solid electrolytic capacitor disclosed is one which comprises, as an electrolyte, polypyrrole synthesized by oxidatively polymerizing an oxidizing agent composed of a sulfonic acid compound as an anion and a high valency transition metal as a cation with pyrrole as a monomer. The polypyrrole constitutes a solid electrolyte, is conductive and is being in the form of grains with mean grain sizes being no greater than 0.2 mu m. Polymerization may use a polymerization solution containing no less than 2% by weight of water, the mole ratio of the monomer to the oxidizing agent being unity or above. The capacitor using such conductive polypyrrole as the electrolyte exhibits excellent frequency characteristics and improved reliability.