POLARIZABLE ELECTRODE MEMBER, PROCESS FOR PRODUCING THE SAME, AND ELECTROCHEMICAL CAPACITOR UTILIZING THE MEMBER

摘要

A polarizable electrode member for electrochemical capacitor, comprising a current collector of metal plane foil, an anchor coat layer formed on at least one major surface of the current collector and an electrode layer formed on either the anchor coat layer or the current collector, wherein the anchor coat layer contains conductive carbon and a binder, the conductive carbon being graphitized carbon black, the binder containing at least one member selected from among an ammonium salt of carboxymethylcellulose, a rubber polymer, polytetrafluoroethylene, polyvinyl alcohol, polyvinylpyrrolidone and an isobutylene-maleic anhydride alternating copolymer. A thickness reduction can be attained, and the electrode layer can directly formed on the anchor coat layer. Satisfactory bonding strength can be ensured between the current collector and the electrode layer to thereby attain an enhancement of energy density and power density leading to realization of low resistance.