Electricity: electrical systems and devices – Electrolytic systems or devices – Double layer electrolytic capacitor
Reexamination Certificate
2008-06-03
2008-06-03
Thomas, Eric (Department: 2831)
Electricity: electrical systems and devices
Electrolytic systems or devices
Double layer electrolytic capacitor
C361S503000
Reexamination Certificate
active
07382602
ABSTRACT:
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.
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Sakata Motohiro
Shimasaki Yukihiro
Matsushita Electric - Industrial Co., Ltd.
McDermott Will & Emery LLP
Thomas Eric
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