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Negative electrode current collector for heterogeneous electrochemical capacitor and method of manufacture thereof

  • US 8,472,163 B2
  • Filed: 02/19/2008
  • Issued: 06/25/2013
  • Est. Priority Date: 02/19/2007
  • Status: Expired due to Fees
First Claim
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1. A current collector for use in an electric double layer electrochemical capacitor having an electrode with a carbon-based active mass and a sulfuric acid electrolyte, comprising:

  • a current collector basis made from a conductive carbon-based active material of p-type conductivity that exhibits electrophysical parameters that are similar to the electrophysical parameters of the active mass of the electrode; and

    a protective film encapsulating at least a portion of said current collector basis and filling the pores thereof, the protective film having a p-type conductivity and comprising a conductive composite material made from a conductive carbon powder and an organic polymer;

    wherein, due to said similar electrophysical parameters, a homojunction occurs in the area of contact between the active mass of the electrode and said current collector.

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