Carbon electrode, electrical double layer capacitor, and...

C - Chemistry – Metallurgy – 04 – B

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C04B 35/52 (2006.01) H01G 9/00 (2006.01) H01G 9/042 (2006.01)

Patent

CA 2237442

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.

Un matériau carboné pour condensateur double couche est produit en réalisant une étape d'halogénation, au cours de laquelle un charbon halogéné distillé à sec est obtenu en mettant un charbon distillé à sec en contact avec un halogène gazeux; une étape de moulage consistant à ajouter un liant au charbon halogéné distillé à sec afin de former un article moulé; et une étape de déhalogénation au cours de laquelle l'halogène contenu dans l'article moulé est éliminé en partie ou en totalité. Le matériau carboné pour condensateur double couche obtenu par cette méthode est imprégné d'acide sulfurique afin de former une électrode de carbone destinée à un condensateur double couche. Cette électrode est utilisée pour former un condensateur double couche.

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