Capacitor
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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Abstract
A capacitor including a cathode of 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 disposed on each of two opposed electrically conducting plates; an anode disposed between and spaced from the porous coatings and the electrically conducting plates and including a metal selected from the group consisting of tantalum, aluminum, niobium, zirconium, and titanium; and an electrolyte disposed between and in contact with the porous coatings and the anode.
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Citations
14 Claims
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1. A capacitor comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A capacitor comprising:
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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 disposed on each of two opposed electrically conducting plates; an anode disposed between and spaced from the porous coatings and the electrically conducting plates and including a metal selected from the group consisting of tantalum, aluminum, niobium, zirconium, and titanium; and an electrolyte disposed between and in contact with the porous coatings and the anode. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A capacitor cell comprising:
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a first metal body; 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 disposed on the first metal body; a second metal body spaced from the porous coating; an anode including a metal selected from the group consisting of tantalum, aluminum, niobium, zirconium, and titanium disposed on the second metal body opposite the first metal body; and a fluid electrolyte disposed between and in contact with the porous coating and the anode.
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Specification