Nickel alloy electrodes for electrochemical devices
First Claim
1. A rechargeable electrode for a rechargeable electrochemical capacitor device, said electrode having an oxidation/reduction charge storage mechanism, and comprising a multi-component material having host having a host matrix selected from the group consisting of nickel, molybdenum,chromium, and combinations thereof, and at least one modifier selected from the group consisting of cobalt, iron, aluminum, titanium, tungsten,vanadium, zirconium, niobium, and combinations thereof.
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Accused Products
Abstract
A nickel alloy material for use as a cathode of an electrochemical charge storage device (10) provides significantly higher charge densities than available in prior art devices. The nickel alloy electrode (30) includes a host matrix material such as nickel, molybdenum, chromium, and combinations thereof, and at least one modifier element selected from the group consisting of cobalt, iron, aluminum, titanium, tungsten, vanadium, zirconium, niobium, and combinations thereof. The rechargeable electrode material may be incorporated into a charge storage device such as an electrochemical capacitor, and including an electrode fabricated of the material (30), an anode (20), and an electrolyte (40) disposed therebetween.
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Citations
20 Claims
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1. A rechargeable electrode for a rechargeable electrochemical capacitor device, said electrode having an oxidation/reduction charge storage mechanism, and comprising a multi-component material having host having a host matrix selected from the group consisting of nickel, molybdenum,chromium, and combinations thereof, and at least one modifier selected from the group consisting of cobalt, iron, aluminum, titanium, tungsten,vanadium, zirconium, niobium, and combinations thereof.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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3. A rechargeable electrode material as in claim 1, wherein said material has the formula Ni58.5 Cr21 Mo13.5 W3 Fe4.
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4. A rechargeable electrode material as in claim 1, wherein said material has the formula Ni55.4 Cr19 Co11 Mo11 Al1.5 Ti3.1.
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5. A rechargeable electrode material as in claim 1, wherein said material has the formula Ni72 Mo28.
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6. A rechargeable electrode material as in claim 1, wherein said material has the formula Ni58.7, Co13.5, Cr19.5, Mo4.3, All.3, Ti3.0.
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7. A rechargeable electrode material as in claim 1, wherein said material is a crystalline or polycrystalline material.
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8. A rechargeable electrode material as in claim 7, wherein said crystalline material has a face-centered cubic crystallographic structure.
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9. A rechargeable electrode material as in claim 7, where said material is a multiphase material.
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10. A rechargeable electrode material as in claim 1, wherein said material is a single phase amorphous material.
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11. A rechargeable electrochemical capacitor charge storage device comprising:
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an anode; an electrolyte; and a cathode having an oxidation/reduction charge storage mechanism, and comprising a multi-component material having a host matrix selected from the group consisting of nickel, molybdenum, chromium and combinations thereof, and at least one modifier selected from the group consisting of cobalt, iron, aluminum, titanium, tungsten, vanadium, zirconium, niobium and combinations thereof and their oxides. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification