A polarized electrode for use in an electrochemical capacitor, in which
electrode includes a current collector made of a metal plain foil, an
anchor coat layer formed at least on one of the surfaces of the current
collector, and an electrode layer formed on either the anchor coat layer
or the current collector. The anchor coat layer contains a conductive
carbon and a binder. The conductive carbon is graphitized carbon black.
The binder contains at least one selected from the group consisting of an
ammonium salt of carboxymethylcellulose, a rubber polymer,
polytetrafluoroethylene, polyvinyl alcohol, polyvinyl pyrrolidone,
alternating copolymer of isobutylene-maleic anhydride. With this
configuration, a polarized electrode can be made thinner, and an
electrode layer can be formed directly on the anchor coat layer.
Furthermore, it can ensure sufficient coupling strength between the
current collector and the electrode layer, and increase the energy
density and the power density realizing a reduced resistance.