Solid electrolytic capacitor with conductive polymer as solid electrolyte and method of manufacturing the same

A method of manufacturing a solid electrolytic capacitor, said method comprising the steps of:

• forming a capacitor element comprising an inner anode, a dielectric film layer on the surface of said anode and a conducting polymer layer on the outside of said dielectric film layer, said conducting polymer layer not containing an antioxidant;
• and
• dipping said capacitor element in a solution containing an antioxidant, thereby causing the antioxidant to be introduced into the conducting polymer layer at the surface of said conducting polymer layer away from the dielectric oxide film, said antioxidant being for blocking the progress of oxidation of organic materials.

A solid electrolytic capacitor comprising:

• a valve action metal anode, a dielectric oxide film on the surface of said anode and a conducting polymer layer as solid electrolyte on the outside of said dielectric oxide film;
• wherein said conducting polymer layer comprises an antioxidant introduced into the surface of said conducting polymer distant from said dielectric oxide layer, said antioxidant being for blocking the progress of oxidation of organic materials.