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.

Abstract: A solid electrolytic capacitor comprising: an anode of valve metals or alloy of which main component is valve metals; a dielectric layer formed by anodizing the anode; and a cathode formed on the dielectric layer, wherein the dielectric layer comprises a first dielectric layer located on the anode side and a second dielectric layer formed on the first dielectric layer, and oxygen concentration of the second dielectric layer is decreased from the first dielectric layer side toward the cathode side.

Abstract: [Objectives]The objectives are to provide a solid electrolytic capacitor having less occurrence of leakage current and a fabrication method therefor. [Solutions] In a solid electrolytic capacitor 100, a dielectric layer 2 of niobium oxide having high electrical insulation whose major component is niobium or oxygen, an electrolyte layer 3 and a cathode 4 are formed in the order on an anode 1 formed of niobium or niobium alloy, said dielectric layer 2 is composed of a first dielectric layer 21 containing fluorine formed on the anode 1 and a second dielectric layer 22 containing phosphorus or sulfur formed on the first dielectric layer 21 and fluorine concentration in said first dielectric layer 21 is decreased from the anode 1 side toward the second dielectric layer 22.

Abstract: A solid electrolytic capacitor comprises an anode formed of at least one metal selected from tantalum, niobium, titanium and tungsten, and a dielectric layer, an electrolytic layer and a cathode disposed on the anode, wherein the cathode comprises a mixed layer containing a first material consisting of silver particles having an average particle diameter (median diameter) of not less than 2 ?m, a second material consisting of conducting carbon particles and/or silver particles having an average particle diameter (median diameter) of 1 ?m or less and a binding agent.

Abstract: A solid electrolytic capacitor has an anode composed of a niobium substrate and a niobium nitride layer, and a dielectric layer composed of niobium oxide is formed on the surface of the niobium nitride layer. In the solid electrolytic capacitor, the nitrogen content based on the total weight of the niobium substrate, the niobium nitride layer, and the dielectric layer is preferably not less than 0.001% by weight nor more than 0.2% by weight. In another solid electrolytic capacitor, an anode is formed by sintering thermally treated niobium powder in a nitrogen atmosphere. A dielectric layer composed of niobium oxide is formed on the surface of the anode. In the solid electrolytic capacitor, the composition ratio X of the niobium powder (NbNX) is preferably not less than 0.05 nor more than 1.0.

Abstract: A solid electrolytic capacitor is provided with: an anode employing tantalum; a dielectric layer formed on said anode; and a cathode layer formed on said dielectric layer. The dielectric layer contains tantalum oxide and fluorine.

Abstract: A solid electrolytic capacitor has a structure in which a dielectric layer and a metal layer are formed in this order on the surface of an anode. The anode is composed of a porous sinter of tantalum particles. The dielectric layer is composed of a dielectric oxide film formed by anodizing the surface of the anode in an aqueous solution consisting of phosphoric acid, for example. The metal layer is formed by preparing a silver paste by mixing silver particles having an average particle diameter of not larger than 0.05 ?m, a protective colloid, and an organic solvent, and applying the silver paste on the surface of the dielectric layer, and drying the silver paste at a temperature of 150° C. or higher. Further, the anode is connected with an anode terminal, and the metal layer is connected with a cathode terminal through a conductive adhesive.

Abstract: A solid electrolytic capacitor of the present invention is provided with: an anode employing titanium; a dielectric layer formed on said anode, which comprises titanium oxide containing fluorine and at least one element selected from a group consisting of phosphorus, boron, sulfur, and tungsten; and a cathode layer formed on said dielectric layer.

Abstract: A solid electrolytic capacitor of the present invention is provided with: an anode employing tantalum; a dielectric layer formed on said anode, which comprises tantalum oxide containing fluorine; and a cathode layer formed on said dielectric layer.

Abstract: A solid electrolytic capacitor of the present invention is provided with: an anode employing titanium; a dielectric layer formed on said anode, which comprises titanium oxide containing fluorine and at least one element selected from a group consisting of phosphorus, boron, sulfur, and tungsten; and a cathode layer formed on said dielectric layer.

Abstract: In a sintered nickel electrode for alkaline storage battery formed by filling nickel hydroxide as an active material into a porous sintered substrate and an alkaline storage battery using as its positive electrode the sintered nickel electrode for alkaline storage battery, tungstic acid is adhered to a surface of said nickel hydroxide as an active material.

Abstract: An electrolytic capacitor of the invention includes an anode of nitrogen-doped titanium or titanium alloy and a dielectric layer formed by anodically oxidizing the anode on a surface of the anode.

Abstract: A solid electrolytic capacitor has a structure in which a dielectric layer, an electrolyte, a carbon layer, and a metal layer are formed in this order on the surface of an anode. The anode is composed of a porous sinter of tantalum particles. The dielectric layer is composed of a dielectric oxide film formed by anodizing the surface of the anode in an aqueous solution of phosphoric acid, for example. The electrolyte is composed of a conductive polymer, such as polypyrrole or polythiophene. The metal layer is formed by preparing a silver paste by mixing silver particles having an average particle diameter of not larger than 0.05 ?m, a protective colloid, and an organic solvent, and applying the silver paste on the surface of the carbon layer, and drying the silver paste at approximately 150° C. or higher.

Abstract: An electrolytic capacitor including one type of electrode selected from a group consisting of an electrode of at least one type of alloy selected from a group consisting of niobium alloy, titanium alloy, and tungsten alloy, an electrode of mixed sinter of niobium and aluminum, or a fluorine-doped electrode of niobium or niobium alloy and on a surface of each electrode a dielectric layer is formed by anodizing the electrode.

Abstract: The nickel electrode for alkaline secondary battery according to the present invention is obtained by applying a paste containing active material particles comprising nickel hydroxide to a conductive substrate and drying the paste on the conductive substrate. In the above-mentioned nickel electrode for alkaline secondary battery, a conductive layer comprising sodium-containing cobalt oxide is formed on a surface of the active material particles and tungsten powder and/or tungsten compound powder is added on the active material particles.

Abstract: A non-sintered nickel electrode for an alkaline storage battery, characterized in that nickel hydroxide particles as active material particles thereof contain a cobalt having a valence of 3 to 3.2 as a solid solution element. The nickel electrode has excellent charging capability.

Abstract: A nickel electrode for alkaline storage battery according to the present invention is formed by applying a paste containing active material particles composed of nickel hydroxide to a conductive substrate and drying said paste, wherein a conductive layer consisting of sodium-containing cobalt oxide is formed on a surface of said active material particles, and titanium powder and/or titanium compound powder is added to the surface of said active material particles, and an alkaline storage battery according to the present invention uses as its positive electrode the above-mentioned nickel electrode for alkaline storage battery.

Abstract: A nickel hydroxide electrode for an alkaline storage battery comprises titanium hydroxide formed on the surface of nickel hydroxide as a main active material impregnated into pores of a porous sintered substrate. An alkaline storage battery comprises a negative electrode and the nickel hydroxide electrode as a positive electrode. The alkaline storage battery provides a high discharge capacity even if the battery is charged under a high temperature atmosphere.

Abstract: A solid electrolytic capacitor of the invention includes a metal electrode employing a metal, a dielectric layer formed on a surface of the metal electrode and composed of an oxide of the metal, and a carbon material layer overlaid on the dielectric layer.

Abstract: A solid electrolytic capacitor has an anode composed of a niobium substrate and a niobium nitride layer, and a dielectric layer composed of niobium oxide is formed on the surface of the niobiumnitride layer. In the solid electrolytic capacitor, the nitrogen content based on the total weight of the niobium substrate, the niobium nitride layer, and the dielectric layer is preferably not less than 0.001% by weight nor more than 0.2% by weight. In another solid electrolytic capacitor, an anode is formed by sintering thermally treated niobium powder in a nitrogen atmosphere. A dielectric layer composed of niobium oxide is formed on the surface of the anode. In the solid electrolytic capacitor, the composition ratio X of the niobium powder (NbNX) is preferably not less than 0.05 nor more than 1.0.