Metal oxide electrode for supercapacitor and manufacturing method thereof
First Claim
1. A metal oxide electrode for a supercapacitor comprising:
- a manganese oxide powder;
a conductive material; and
a binder for binding said manganese oxide powder to said conductive material.
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Accused Products
Abstract
A metal oxide electrode for a supercapacitor and a manufacturing method thereof are disclosed. Potassium permanganate is absorbed on a conductive material, such as carbon or activated carbon, and mixed with a solution including manganese acetate so as to form amorphous manganese oxide. Amorphous manganese oxide powder is grounded to a powder which is mixed with binder to form an electrode having a predetermined shape. The electrode reduces equivalent serial resistance and enhances high frequency characteristics since the contact area and the adhesion strength between the manganese oxide and the conductive carbon are improved. Also, the electrode has high capacitance suitable for a supercapacitor, which is manufactured therefrom at a greatly reduced cost.
38 Citations
34 Claims
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1. A metal oxide electrode for a supercapacitor comprising:
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a manganese oxide powder;
a conductive material; and
a binder for binding said manganese oxide powder to said conductive material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 17, 18, 19)
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13. A metal oxide electrode for a supercapacitor comprising:
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a conductive carbon;
an amorphous manganese oxide powder coated on said conductive carbon; and
a binder for binding said manganese oxide powder to said conductive carbon.
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16. A metal oxide electrode for a supercapacitor comprising:
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an activated carbon;
an amorphous manganese oxide powder coated in pores of said activated carbon and on a surface of said activated carbon; and
a binder for binding said manganese oxide powder to said activated carbon.
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20. A method for manufacturing a metal oxide electrode for a supercapacitor comprising the steps of:
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forming a conductive material solution by dispersing a conductive material in deionized water;
forming a first solution by adding potassium permanganate to the conductive material solution;
forming a second solution comprising a manganese acetate;
forming an amorphous manganese oxide by mixing the first solution with the second solution; and
forming the metal oxide electrode comprising said amorphous manganese oxide. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34)
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29. A method for manufacturing a metal oxide electrode for a supercapacitor comprising the steps of:
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grinding potassium permanganate;
heating a furnace to a predetermined temperature;
thermally decomposing the ground potassium permanganate in the furnace;
quenching the product;
washing and filtering the product; and
mixing the product with a conductive material, a binder and a solution.
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Specification