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Capacitor

  • US 5,737,181 A
  • Filed: 04/22/1996
  • Issued: 04/07/1998
  • Est. Priority Date: 03/22/1993
  • Status: Expired due to Term
First Claim
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1. A capacitor comprising:

  • a cathode comprising a porous coating including an oxide of at least one metal selected from the group consisting of ruthenium, iridium, nickel, rhodium, platinum, palladium, and osmium;

    an anode spaced from the porous coating and including a metal selected from the group consisting of tantalum, aluminum, niobium, zirconium, and titanium; and

    a solid electrolyte disposed between and in contact with the porous coating and the anode and selected from the group consisting of polypyrrole, a polymer containing ion-permeable channels, polyaniline, and a gel of an aqueous electrolyte and silica wherein the cathode comprises two opposed electrically conducting plates, each plate including the porous coating, the porous coatings facing each other, the anode is disposed between and spaced from each of the porous coatings, and the electrolyte is in contact with each of the porous coatings.

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