Capacitor
First Claim
Patent Images
1. A capacitor comprising:
- a container having an inside surface;
a cathode comprising a porous coating including an oxide of a metal selected from the group consisting of ruthenium, iridium, nickel, rhodium, platinum, palladium, and osmium disposed on the inside surface of the container;
an anode spaced from the porous coating and including a metal selected from the group consisting of tantalum, aluminum, niobium, zirconium, and titanium; and
an electrolyte in contact with the porous coating and the anode, the container containing the anode and the electrolyte.
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Abstract
An electrolytic capacitor including a metal container having an inside surface and an outside surface and functioning as a cathode of the capacitor, a porous coating including an oxide of one of ruthenium, iridium, nickel, rhodium, platinum, palladium, and osmium disposed at the inside surface of the container in electrical communication with the container, an anode selected from the group consisting of tantalum, aluminum, niobium, zirconium, and titanium, disposed within and spaced from the porous coating, and an electrolyte within the container in contact with the porous coating and the electrode.
196 Citations
40 Claims
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1. A capacitor comprising:
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a container having an inside surface; a cathode comprising a porous coating including an oxide of a metal selected from the group consisting of ruthenium, iridium, nickel, rhodium, platinum, palladium, and osmium disposed on the inside surface of the container; an anode spaced from the porous coating and including a metal selected from the group consisting of tantalum, aluminum, niobium, zirconium, and titanium; and an electrolyte in contact with the porous coating and the anode, the container containing the anode and the electrolyte. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A capacitor comprising:
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a plurality of capacitor cells, each cell including; a container comprising a first metal body having opposed inside and Outside surfaces, a second metal body having opposed inside and outside surface and a sealant disposed between and contacting adjacent first and second metal bodies; a cathode comprising a porous coating including an oxide of a metal selected from the group consisting of ruthenium, iridium, nickel, rhodium, platinum, palladium, and osmium disposed on the inside surfaces of said first and second metal bodies; an anode selected from the group consisting of tantalum, aluminum, niobium, zirconium, and titanium disposed on the outside surfaces of the first and second metal bodies; and spacing means disposed between the porous coating and the anode for preventing direct contact between the porous coating and the anode within each capacitor cell, wherein the plurality of the capacitor cells are disposed in a serial arrangement with the porous coating on one first metal body being disposed opposite the anode of the next adjacent second metal body in the serial arrangement with the spacing means disposed between, separating, and preventing direct contact between the opposed porous coatings and the anodes in each capacitor cell in the serial arrangement; a third metal body having first and second opposed surfaces disposed at a first end of the serial arrangement and having a porous coating including an oxide of a metal selected from the group consisting of ruthenium, iridium, nickel, rhodium, platinum, palladium, and osmium disposed on one side of the third metal body and opposite an anode of a first metal body in the serial arrangement, but no anode, as a cathode terminal of the capacitor; a fourth metal body having first and second opposed surfaces and disposed at a second end of the serial arrangement and including an anode selected from the group consisting of tantalum, aluminum, niobium, zirconium, and titanium disposed on one side of the fourth metal body and opposite a porous coating of a second metal body in the serial arrangement, but no porous coating, as an anode of the capacitor; an electrolyte disposed between and contacting the opposed porous coatings and anodes in the serial arrangement; and a sealant disposed between and contacting the third metal body and a first metal body and between and contacting a second metal body and the fourth metal body in the serial arrangement, sealing the electrolyte within the capacitor cells. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification