Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode including a dielectric layer thereon and a cathode member including a conductive polymer and in contact with the dielectric layer. The capacitor element is impregnated with a liquid containing at least one of polyalkylene glycol and derivatives of polyalkylene glycol. The liquid further contains an oxidation inhibitor.

Abstract: An electrochemical device positive electrode with a lead member includes a positive electrode and a lead member attached to the positive electrode. The positive electrode includes a positive current collector, a carbon layer, and an active layer. The carbon layer is disposed on a surface of the positive current collector, and contains a conductive carbon material. The active layer is supported by the positive current collector via the carbon layer disposed between the active layer and the positive current collector, and contains a conductive polymer. The lead member is in contact with the carbon layer.

Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode including a dielectric layer thereon and a cathode member including a conductive polymer and in contact with the dielectric layer. The capacitor element is impregnated with a liquid containing at least one of polyalkylene glycol and derivatives of polyalkylene glycol. The liquid further contains an oxidation inhibitor.

Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode including a dielectric layer thereon and a cathode member including a conductive polymer and in contact with the dielectric layer. The capacitor element is impregnated with a liquid containing at least one of polyalkylene glycol and derivatives of polyalkylene glycol. The liquid further contains an aromatic compound having a nitro group and at least one of a hydroxyl group and a carboxyl group.

Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode including a dielectric layer thereon and a cathode member including a conductive polymer and in contact with the dielectric layer. The capacitor element is impregnated with a liquid containing at least one of polyalkylene glycol and derivatives of polyalkylene glycol. The liquid further contains an aromatic compound having a nitro group and at least one of a hydroxyl group and a carboxyl group.

Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes: an anode foil having a dielectric layer thereon, and a cathode layer including a conductive polymer and in contact with the dielectric layer. The capacitor element is impregnated with a liquid containing at least one of polyalkylene glycol and derivatives selected from a group consisting of polyethylene glycol glyceryl ether, polyethylene glycol diglyceryl ether, polyethylene glycol sorbitol ether, polypropylene glycol glyceryl ether, polypropylene glycol diglyceryl ether, polypropylene glycol sorbitol ether, copolymers of ethylene glycol and propylene glycol, copolymers of ethylene glycol and butylene glycol, and copolymers of propylene glycol and butylene glycol.

Abstract: An electrochemical device positive electrode with a lead member includes a positive electrode and a lead member attached to the positive electrode. The positive electrode includes a positive current collector, a carbon layer, and an active layer. The carbon layer is disposed on a surface of the positive current collector, and contains a conductive carbon material. The active layer is supported by the positive current collector via the carbon layer disposed between the active layer and the positive current collector, and contains a conductive polymer. The lead member is in contact with the carbon layer.

Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes: an anode foil having a dielectric layer thereon, and a cathode layer including a conductive polymer and in contact with the dielectric layer. The capacitor element is impregnated with a liquid containing at least one of polyalkylene glycol and derivatives selected from a group consisting of polyethylene glycol glyceryl ether, polyethylene glycol diglyceryl ether, polyethylene glycol sorbitol ether, polypropylene glycol glyceryl ether, polypropylene glycol diglyceryl ether, polypropylene glycol sorbitol ether, copolymers of ethylene glycol and propylene glycol, copolymers of ethylene glycol and butylene glycol, and copolymers of propylene glycol and butylene glycol.

Abstract: An electrolytic capacitor includes a capacitor element, and a liquid solution with which the capacitor element is impregnated. The capacitor element includes: an anode foil having a dielectric layer thereon, and a cathode layer including a conductive polymer and in contact with the dielectric layer. The liquid solution contains at least one of polyalkylene glycol and derivatives thereof. A total weight content of polyalkylene glycol and derivatives thereof in the liquid solution is 15 wt % or greater with respect to a weight of the liquid solution.

Abstract: A first conductive polymer solution in which fine particles of a conductive polymer are dispersed is applied to a dielectric layer of aluminum oxide, and this solution is dried to form a first conductive polymer layer. Next, a coating solution is applied to the first conductive polymer layer, this solution containing at least one selected from an aromatic sulfonic acid having, in one molecule of the acid, a carboxyl group and a hydroxyl group, or two carboxyl groups, and a salt of the aromatic sulfonic acid. The solution is then dried to form a coating layer. Next, a second conductive polymer solution is applied to the coating layer, the solution being a solution in which fine particles of a conductive polymer are dispersed. This solution is then dried to form a second conductive polymer layer. This process gives a solid electrolyte layer of a capacitor element.

Abstract: An electrolytic capacitor includes a capacitor element, and a liquid solution with which the capacitor element is impregnated. The capacitor element includes: an anode foil having a dielectric layer thereon, and a cathode layer including a conductive polymer and in contact with the dielectric layer. The liquid solution contains at least one of polyalkylene glycol and derivatives thereof. A total weight content of polyalkylene glycol and derivatives thereof in the liquid solution is 15 wt % or greater with respect to a weight of the liquid solution.

Abstract: An electrolytic capacitor includes a capacitor element, and an electrolyte solution with which the capacitor element is impregnated. The capacitor element includes an anode foil having a dielectric layer on a surface thereof, and a solid electrolyte layer including a conductive polymer and in contact with the dielectric layer of the anode foil. The electrolyte solution contains at least one of polyalkylene glycol and a derivative of polyalkylene glycol, and at least one of diphenyl amine, naphthol, nitrophenol, catechol, resorcinol, hydroquinone, and pyrogallol.

Abstract: An electrolytic capacitor includes a capacitor element, and an electrolyte solution with which the capacitor element is impregnated. The capacitor element includes an anode foil having a dielectric layer on a surface thereof, and a solid electrolyte layer including a conductive polymer and in contact with the dielectric layer of the anode foil. The electrolyte solution contains at least one of polyalkylene glycol and a derivative of polyalkylene glycol, and at least one of diphenyl amine, naphthol, nitrophenol, catechol, resorcinol, hydroquinone, and pyrogallol.

Abstract: An electrolytic capacitor includes a capacitor element, an electrolyte solution with which the capacitor element is impregnated, and an outer package enclosing the capacitor element and the electrolyte solution. The capacitor element includes an anode foil having a dielectric layer on a surface thereof, a cathode foil, a separator disposed between the anode foil and the cathode foil, and a solid electrolyte layer in contact with the dielectric layer of the anode foil and the cathode foil. The electrolyte solution contains a low-volatile solvent that is at least one of polyalkylene glycol and a derivative of polyalkylene glycol.

Abstract: A first conductive polymer solution in which fine particles of a conductive polymer are dispersed is applied to a dielectric layer of aluminum oxide, and this solution is dried to form a first conductive polymer layer. Next, a coating solution is applied to the first conductive polymer layer, this solution containing at least one selected from an aromatic sulfonic acid having, in one molecule of the acid, a carboxyl group and a hydroxyl group, or two carboxyl groups, and a salt of the aromatic sulfonic acid. The solution is then dried to form a coating layer. Next, a second conductive polymer solution is applied to the coating layer, the solution being a solution in which fine particles of a conductive polymer are dispersed. This solution is then dried to form a second conductive polymer layer. This process gives a solid electrolyte layer of a capacitor element.

Abstract: An electrolytic capacitor includes a capacitor element, an electrolyte solution with which the capacitor element is impregnated, and an outer package enclosing the capacitor element and the electrolyte solution. The capacitor element includes an anode foil having a dielectric layer on a surface thereof, a cathode foil, a separator disposed between the anode foil and the cathode foil, and a solid electrolyte layer in contact with the dielectric layer of the anode foil and the cathode foil. The electrolyte solution contains a low-volatile solvent that is at least one of polyalkylene glycol and a derivative of polyalkylene glycol.

Abstract: A solid electrolytic capacitor includes a positive electrode foil made of metal, a dielectric oxide layer provided on a surface of the positive electrode foil, a separator provided on the dielectric oxide layer, a solid electrolyte layer made of conductive polymer impregnated in the separator, a negative electrode foil facing the dielectric oxide layer across the solid electrolyte layer, and a phosphate provided on the dielectric oxide layer. This solid electrolytic capacitor reduces a leakage current.

Abstract: An aluminum electrolytic capacitor having an excellent short-circuit resistance, high capacitance, long life, and low equivalent series resistance (ESR) is provided. For this purpose, the aluminum electrolytic capacitor includes a capacitor element having a positive electrode foil, a first separator, a negative electrode foil, and a second separator, which are sequentially laminated one on another and wound together. After the capacitor element is impregnated with a driving electrolyte solution and housed in a metallic case, an open end of the metallic case is sealed with a sealing material. A ratio of B/A, i.e. a ratio of total thickness B of the first and second separators after winding with respect to total thickness A of the first and second separators before winding, is set in the range from 0.5 to 0.8.

Abstract: An electrolytic solution for use in an electrolytic capacitor including a capacitor element and a casing containing the capacitor element, the capacitor element including a pair of electrodes, and a conductive separator (E) which is formed with a conductive polymer layer (F) containing a dopant agent (H) on its surface and is interposed between the pair of electrodes, the conductive separator (E) and the pair of electrodes being rolled up in an overlapped state with each other, and spaces between the pair of electrodes being impregnated with the electrolytic solution, wherein an acid component (D) and a base component (C) as electrolytic components to be contained in the electrolytic solution are at such a molar ratio that the acid component (D) is excessive. By use of the electrolytic solution, increase in the ESR with the elapse of time in an electrolytic capacitor is suppressed.

Abstract: A solid electrolytic capacitor includes a positive electrode foil made of metal, a dielectric oxide layer provided on a surface of the positive electrode foil, a separator provided on the dielectric oxide layer, a solid electrolyte layer made of conductive polymer impregnated in the separator, a negative electrode foil facing the dielectric oxide layer across the solid electrolyte layer, and a phosphate provided on the dielectric oxide layer. This solid electrolytic capacitor reduces a leakage current.