Recharge catalyst with thin film carbon coating, metal-air electrode including said catalyst and methods for making said catalyst and electrode
First Claim
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1. Catalyst composition for use in a rechargeable metal-air electrochemical cell comprising an oxygen evolution catalyst coated with a thin film deposition coating of carbon, wherein the thin film of carbon has a thickness less than about 10 microns.
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Abstract
A catalyst composition for use in a rechargeable metal-air electrochemical cell comprises an oxygen evolution catalyst coated with a thin film deposition of carbon. This catalyst is useful to make an air electrode which produces more power in a metal-air cell then a metal-air cell having oxygen evolution catalyst without the thin carbon film.
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Citations
38 Claims
- 1. Catalyst composition for use in a rechargeable metal-air electrochemical cell comprising an oxygen evolution catalyst coated with a thin film deposition coating of carbon, wherein the thin film of carbon has a thickness less than about 10 microns.
- 6. Method for making a catalyst composition for use in a rechargeable metal-air electrochemical cell comprising depositing a thin film coating of carbon on an oxygen evolution catalyst, wherein the thin film of carbon has a thickness less than about 10 microns.
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11. A bifunctional air electrode for use in a rechargeable metal-air electrochemical cell comprising:
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an active layer comprising an oxygen reduction catalyst and an oxygen evolution catalyst, the oxygen evolution catalyst being coated with a thin film deposition coating of carbon, wherein the thin film of carbon has a thickness less than about 10 microns; a wet-proofing layer laminated to the active layer to form a laminate; and a current collector in electrical contact with the laminate. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. Method for making a bifunctional air electrode for use in a rechargeable metal-air electrochemical cell comprising the steps of:
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coating an oxygen evolution catalyst with a thin film deposition coating of carbon, wherein the thin film of carbon has a thickness less than about 10 microns; admixing an oxygen reduction catalyst and the coated oxygen evolution catalyst to form an active layer mixture; forming a laminate comprising a wet-proofing layer and an active layer, the active layer formed with the active layer mixture; and positioning a current collector in electrical contact with the laminate. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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- 27. Catalyst composition for use in a rechargeable metal-air electrochemical cell comprising an oxygen evolution catalyst coated with a thin film deposition coating consisting essentially of carbon.
- 30. Method for making a catalyst composition for use in a rechargeable metal-air electrochemical cell comprising depositing a thin film coating consisting essentially of carbon on an oxygen evolution catalyst.
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33. A bifunctional air electrode for use in a rechargeable metal-air electrochemical cell comprising:
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an active layer comprising an oxygen reduction catalyst and an oxygen evolution catalyst, the oxygen evolution catalyst being coated with a thin film deposition coating consisting essentially of carbon; a wet-proofing layer laminated to the active layer to form a laminate; and a current collector in electrical contact with the laminate. - View Dependent Claims (34, 35)
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36. Method for making a bifunctional air electrode for use in a rechargeable metal-air electrochemical cell comprising the steps of:
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coating an oxygen evolution catalyst with a thin film deposition coating consisting essentially of carbon; admixing an oxygen reduction catalyst and the coated oxygen evolution catalyst to form an active layer mixture; forming a laminate comprising a wet-proofing layer and an active layer, the active layer formed with the active layer mixture; and positioning a current collector in electrical contact with the laminate. - View Dependent Claims (37, 38)
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Specification