Recharge catalyst with thin film carbon coating, metal-air electrode including said catalyst and methods for making said catalyst and electrode
AssigneeAER Energy Resources, Inc.
InventorsIrena Kuznetsov, Milton Neal Golovin
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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.
Claims38
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.
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.
A bifunctional air electrode for use in a rechargeable metal-air electrochemical cell comprising:
- 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.
Method for making a bifunctional air electrode for use in a rechargeable metal-air electrochemical cell comprising the steps of:
- 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.
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.
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.
A bifunctional air electrode for use in a rechargeable metal-air electrochemical cell comprising:
- 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.
Method for making a bifunctional air electrode for use in a rechargeable metal-air electrochemical cell comprising the steps of:
- 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.
Dependencies are inferred from the claim text.