Nippon Sanso Corporation

Toshiya Miyagawa

Akihiro Nakamura

Takushi Ohsaki

Akira Wakaizumi

Shinichi Marumo

Mitsuo Kigure

Takashi Inui

Tadayoshi Iwasaki

Yasuo Tatsumi

Tadao Adachi

A carbonaceous material for an electrical double layer capacitor is produced by performing a halogenation treatment step wherein a halogenated dry-distilled charcoal is obtained by bringing a dry-distilled charcoal into contact with a halogen gas; a molding treatment step of adding a binding agent to the halogenated dry-distilled charcoal to form a molded article; and a dehalogenation treatment step wherein a part or all of the halogen in the molded article is eliminated. The carbonaceous material for an electrical double layer capacitor obtained by this method is impregnated with sulfuric acid to form a carbon electrode for an electrical double layer capacitor. This electrode is used to form an electrical double layer capacitor.

Manufacturing method for carbon material for electrical double layer

It is the objective of the present invention to provide an active carbon electrode which is of sufficient mechanical strength to be formed into a large plate, may be suitably used as an electrical double layer condenser capable of a large current discharge, and which can realize a high capacitance. The method of production for such an active carbon electrode comprises the steps of a) producing a carbon base material by carrying out a first activation treatment to a carbon material obtained by carbonization of a carbon compound; b) producing a formed body by adding a binder to the carbon base material; c) carbonizing the formed body; and d) producing an active carbon electrode by carrying out a second activation treatment to the carbonized formed body.

Method of production for active carbon electrode for use as electrical

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Kitakoma-gun, Japan

Toshiya Miyagawa