Solid electrolytic capacitor and method of manufacturing solid electrolytic capacitor cathode material
AssigneeSanyo Electric Co., Ltd.
InventorsHiroyoshi Take, Mutsumi Yano, Mamoru Kimoto
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Abstract
A solid electrolytic capacitor comprising: an anode of valve metal or of an alloy of which main component is the valve metal; a dielectric layer formed by anodizing the anode; an electrolyte layer formed on the dielectric layer; and a cathode formed on the electrolyte layer; wherein the cathode comprises a carbon layer containing coated carbon particles in which at least a part of the surface of carbon particles is coated with metal and/or metal compound having higher conductivity than carbon.
Claims11
A solid electrolytic capacitor comprising:
- an anode of valve metal or of an alloy of which main component is said valve metal;
- a dielectric layer formed by anodizing said anode;
- an electrolyte layer formed on said dielectric layer;
- and a cathode formed on said electrolyte layer;
- wherein said cathode comprises a carbon layer containing coated carbon particles in which at least a part of the surface of carbon particles is coated with metal and/or metal compound having higher conductivity than carbon.
A method of manufacturing solid electrolytic capacitor cathode material comprising the steps of:
- soaking carbon particles in a silver nitrate aqueous solution;
- and coating at least a part of the surface of carbon particles with silver by heat-treating the carbon particles.
A method of manufacturing solid electrolytic capacitor cathode material comprising the step of coating at least a part of the surface of carbon particles with at least one type of metals selected from silver, gold and platinum by electroless plating.
A method of manufacturing solid electrolytic capacitor cathode material comprising the steps of:
- soaking carbon particles in a solution of metal ammine complexes;
- and coating at least a part of the surface of carbon particles with metal nitride by heat-treating the carbon particles under nitrogen atmosphere.
A method of manufacturing solid electrolytic capacitor cathode material comprising the steps of:
- soaking carbon particles in a solution of metal complexes;
- and coating at least a part of the surface of carbon particles with metal carbide by heat-treating the carbon particles.
Dependencies are inferred from the claim text.