Electrolytic capacitor

An electrolytic capacitor comprising:

• anode foil on which dielectric oxide film is formed;
• a cathode body with a reduction site on a surface thereof;
• and
• electrolytic solution intervening between the anode foil and the cathode body and containing a nitro compound,
• wherein:
• the cathode body includes cathode foil formed of valve metal, and a carbon layer which is laminated on the cathode foil and which becomes the reduction site, and
• the nitro compound is contained in the electrolytic solution in a rate of 1.5 mg or less per 1 cm2 of a projected area of the cathode body.

A manufacturing method of an electrolytic capacitor, comprising:

• an anode formation step of forming anode foil on which dielectric oxide film is formed;
• a cathode formation step of forming a cathode body with a reduction site on a surface thereof;
• a preparation step of preparing electrolytic solution;
• and
• an impregnation step of intervening the electrolytic solution between the anode foil and the cathode body,
• wherein:
• the cathode formation step includes a lamination step of laminating a carbon layer, which becomes the reduction site, on cathode foil formed of valve metal, and
• the preparation step includes an addition step of adding nitro compound to the electrolytic solution in a rate of 1.5 mg or less per 1 cm2 of a projected area of the cathode body.