Nippon Chemi-con Corporation

Tatsuru Hatae

Atsushi Yoshida

Kazuya Koseki

Kazuhiro Nagahara

Makoto Tominaga

A cathode and an electrolytic capacitor including the cathode which can suppress production of hydrogen gas are provided. The cathode of the electrolytic capacitor comprising cathode foil formed of valve action metal, and a conductive layer formed on a surface of the cathode foil. When current in a range of current density of leakage current of the electrolytic capacitor flows by electrochemical polarization, potential corresponding to said current is at a higher side than a natural immersion potential of reference cathode foil formed of the valve action metal with purity of 99.9%.

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Kanagawa, Japan

Tatsuru Hatae