Abstract: A solid electrolytic capacitor includes a capacitor element. The capacitor element includes an anode foil including a base material part and a porous part disposed on a surface of the base material part, a dielectric layer disposed on at least a part of a surface of the anode foil, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The anode foil includes an anode section on which the solid electrolyte layer is not disposed, a cathode formation section on which the solid electrolyte layer is disposed, and a separation section located between the anode section and the cathode formation section. A first insulating material is disposed on a surface of the porous part in the separation section. And at least a part of a region of the porous part that is covered with the first insulating material includes a second insulating material.

Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode body, a dielectric layer that covers at least a part of the anode body, a solid electrolyte layer that covers at least a part of the dielectric layer, and a cathode lead-out layer that covers a part of the solid electrolyte layer. The cathode lead-out layer contains a carbon material and a first polymer including an acid group. The acid group includes at least one selected from the group consisting of a sulfone group, a carboxyl group, and a derivative of the sulfone group or the carboxyl group.

Abstract: A solid electrolytic capacitor element includes an anode body, a dielectric layer formed on a surface of the anode body, and a cathode part covering at least a part of the dielectric layer. The cathode part includes a solid electrolyte layer covering the at least the part of the dielectric layer. The solid electrolyte layer includes a conductive polymer component containing a conjugated polymer. An oxygen permeability P1 of the solid electrolyte layer after heating at 230° C. for 5 hours is less than or equal to 1.0 cm3/m2·24 h·atm.

Abstract: A solid electrolytic capacitor includes a capacitor element. The capacitor element includes an anode foil including a base material part and a porous part disposed on a surface of the base material part, a dielectric layer disposed on at least a part of a surface of the anode foil, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The anode foil includes an anode section on which the solid electrolyte layer is not disposed, a cathode formation section on which the solid electrolyte layer is disposed, and a separation section located between the anode section and the cathode formation section. A first insulating material is disposed on a surface of the porous part in the separation section. And at least a part of a region of the porous part that is covered with the first insulating material includes a second insulating material.

Abstract: An anode body, a dielectric layer disposed on a surface of the anode body, and a cathode part covering at least a part of the dielectric layer are provided. The cathode part includes a solid electrolyte layer covering the at least the part of the dielectric layer and containing a conjugated polymer. A solid electrolytic capacitor having excellent heat resistance is provided by using a solid electrolytic capacitor element where a full width at half maximum of a first peak is in a range from 35 cm?1 to 80 cm?1 inclusive when the first peak attributed to a CC stretching vibration derived from the conjugated polymer is fitted with a Lorentz function in a Raman spectrum of the solid electrolyte layer.

Abstract: A solid electrolytic capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The cathode lead-out layer includes a carbon layer that is in contact with the solid electrolyte layer and covers the at least the part of the solid electrolyte layer. The carbon layer includes a carbonaceous material and a transition metal ion component. A content proportion of the transition metal ion component in the carbon layer is 17000 ppm or less on a mass basis.

Abstract: A solid electrolytic capacitor element includes an anode foil that includes a porous part in a surface layer of the anode foil, a dielectric layer,and a cathode part. The cathode part includes a solid electrolyte layer that covers the at least a part of the dielectric layer and a cathode lead-out layer that covers at least a part of the solid electrolyte layer. The anode foil includes a first part that is a cathode forming part where the solid electrolyte layer is formed and a second part where the solid electrolyte layer is not formed. And the anode foil includes a dense part in the surface layer in at least one of the first part and the second part. The dense part has a porosity smaller than a porosity of the porous part. The second part includes at least an anode part including an end part of the anode foil opposite to the first part.

Abstract: A solid electrolytic capacitor element includes an anode body including a porous part, a dielectric layer, and a cathode part. The cathode part includes a solid electrolyte layer covering the dielectric layer. The anode body includes a first anode body part on which the solid electrolyte layer is disposed and a second anode body part on which the solid electrolyte layer is not disposed. The solid electrolyte layer includes a first solid electrolyte layer disposed in the porous part and a second solid electrolyte layer disposed outside the porous part. When a length of the first anode body part in a longitudinal direction thereof is defined as a length L, a thickness of the second solid electrolyte layer in a first region is more than or equal to 1 ?m. The first region is a region between boundary between the first anode body part and the second anode body part and a position located away from boundary in a length 0.05L in the first anode body part.

Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode body, a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer covering at least a part of the dielectric layer, and a first layer covering at least a part of the solid electrolyte layer. The first layer is in contact with the solid electrolyte layer. The first layer constitutes at least a part of the cathode lead-out layer. An electrode potential Ps of the solid electrolyte layer is higher than an electrode potential P1 of the first layer.

Abstract: An electrolytic capacitor including a capacitor element. The capacitor element includes an anode body, a dielectric layer covering at least a part of the anode body, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The cathode lead-out layer includes a conductive layer. An oxygen permeability of the conductive layer at a thickness of 10 ?m is less than or equal to 7 cc/m2·day·atm.

Abstract: An electrolytic capacitor includes a capacitor element. The capacitor element includes an anode body, a dielectric layer that covers at least a part of the anode body, a solid electrolyte layer that covers at least a part of the dielectric layer, and a cathode lead-out layer that covers a part of the solid electrolyte layer. The cathode lead-out layer contains a carbon material and a first polymer including an acid group. The acid group includes at least one selected from the group consisting of a sulfone group, a carboxyl group, and a derivative of the sulfone group or the carboxyl group.

Abstract: A solid electrolytic capacitor includes a capacitor element. The capacitor element includes an anode foil including a base material part and a porous part disposed on a surface of the base material part, a dielectric layer disposed on at least a part of a surface of the anode foil, a solid electrolyte layer covering at least a part of the dielectric layer, and a cathode lead-out layer covering at least a part of the solid electrolyte layer. The anode foil includes an anode section on which the solid electrolyte layer is not disposed, a cathode formation section on which the solid electrolyte layer is disposed, and a separation section located between the anode section and the cathode formation section. A first insulating material is disposed on a surface of the porous part in the separation section. And at least a part of a region of the porous part that is covered with the first insulating material includes a second insulating material.

Abstract: There is provided a conductive polymer having high conductivity with excellent heat resistance. Using the conductive polymer, there can be provided solid electrolytic capacitors having low ESR, high reliability, and less leakage current. There can be also provided conductive films having high conductivity and superior heat resistance. There is provided a conductive polymer dispersion liquid obtained by a method in which in the presence of a copolymer from styrenesulfonic acid, and at least one kind of a non-sulfonic acid monomer selected from the group consisting of methacrylate, acrylate, and an unsaturated hydrocarbon containing alkoxysilane compound or its hydrolysate, thiophene or its derivative is polymerized by oxidation polymerization in water, or in an aqueous solution comprising a mixture of water and a water miscible solvent to produce the conductive polymer dispersion liquid. Using the conductive polymer as solid electrolyte, a solid electrolyte capacitor can be provided.

Abstract: There is provided an electrolyte capacitor, which has a low ESR, and is superior in the heat resistance and reliable under a hot condition. The electrolyte capacitors in constructed by including a conductive polymer and a conductive auxiliary liquid having a lower conductivity than usual electrolyte, having a structure below. The conductive auxiliary liquid includes a high boiling point organic solvent having a boiling point of 150° C. or more, and an aromatic compound having at least one hydroxyl group. The aromatic compounds preferably includes an aromatic compound having at least one carboxyl group or an aromatic compound having at least one nitro group, or a combination of an aromatic compound having at least one carboxyl group with an aromatic compound having at least one nitro group.

Abstract: There is provided a conductive polymer having high conductivity with excellent heat resistance. Using the conductive polymer, there can be provided solid electrolytic capacitors having low ESR, high reliability, and less leakage current. There can be also provided conductive films having high conductivity and superior heat resistance. There is provided a conductive polymer dispersion liquid obtained by a method in which in the presence of a copolymer from styrenesulfonic acid, and at least one kind of a non-sulfonic acid monomer selected from the group consisting of methacrylate, acrylate, and an unsaturated hydrocarbon containing alkoxysilane compound or its hydrolysate, thiophene or its derivative is polymerized by oxidation polymerization in water, or in an aqueous solution comprising a mixture of water and a water miscible solvent to produce the conductive polymer dispersion liquid. Using the conductive polymer as solid electrolyte, a solid electrolyte capacitor can be provided.

Abstract: There is provided a conductive polymer having high conductivity with excellent heat resistance. Using the conductive polymer, there can be provided solid electrolytic capacitors having low ESR, high reliability, and less leakage current. There can be also provided conductive films having high conductivity and superior heat resistance. There is provided a conductive polymer dispersion liquid obtained by a method in which in the presence of a copolymer from styrenesulfonic acid, and at least one kind of a non-sulfonic acid monomer selected from the group consisting of methacrylate, acrylate, and an unsaturated hydrocarbon containing alkoxysilane compound or its hydrolysate, thiophene or its derivative is polymerized by oxidation polymerization in water, or in an aqueous solution comprising a mixture of water and a water miscible solvent to produce the conductive polymer dispersion liquid. Using the conductive polymer as solid electrolyte, a solid electrolyte capacitor can be provided.

Abstract: There is provided a method to provide a capacitor element including a porous body of a valve metal, and a dielectric layer of an oxide layer of the valve metal. The method includes a first sequential process, and a second sequential process. The first sequential process includes: immersing the capacitor element in a first liquid of dispersion of a conductive polymer obtained by means of oxidation polymerization of thiophene or its derivative in the presence of a dopant of a polymer anion; taking out the capacitor element from the first liquid; and drying the capacitor element. Subsequent second sequential process includes: immersing the capacitor element in a second liquid which dissolves a cyclic organic compound having at least one hydroxyl group; taking out the capacitor element from the second liquid; and drying the capacitor element.

Abstract: There is provided an electrolyte capacitor, which has a low ESR, and is superior in the heat resistance and reliable under a hot condition. The electrolyte capacitors in constructed by including a conductive polymer and a conductive auxiliary liquid having a lower conductivity than usual electrolyte, having a structure below. The conductive auxiliary liquid includes a high boiling point organic solvent having a boiling point of 150° C. or more, and an aromatic compound having at least one hydroxyl group. The aromatic compounds preferably includes an aromatic compound having at least one carboxyl group or an aromatic compound having at least one nitro group, or a combination of an aromatic compound having at least one carboxyl group with an aromatic compound having at least one nitro group.

Abstract: There is provided a conductive polymer having high conductivity with excellent heat resistance. Using the conductive polymer, there can be provided solid electrolytic capacitors having low ESR, high reliability, and less leakage current. There can be also provided conductive films having high conductivity and superior heat resistance. There is provided a conductive polymer dispersion liquid obtained by a method in which in the presence of a copolymer from styrenesulfonic acid, and at least one kind of a non-sulfonic acid monomer selected from the group consisting of methacrylate, acrylate, and an unsaturated hydrocarbon containing alkoxysilane compound or its hydrolysate, thiophene or its derivative is polymerized by oxidation polymerization in water, or in an aqueous solution comprising a mixture of water and a water miscible solvent to produce the conductive polymer dispersion liquid. Using the conductive polymer as solid electrolyte, a solid electrolyte capacitor can be provided.

Abstract: There is provided a method to provide a capacitor element including a porous body of a valve metal, and a dielectric layer of an oxide layer of the valve metal. The method includes a first sequential process, and a second sequential process. The first sequential process includes: immersing the capacitor element in a first liquid of dispersion of a conductive polymer obtained by means of oxidation polymerization of thiophene or its derivative in the presence of a dopant of a polymer anion; taking out the capacitor element from the first liquid; and drying the capacitor element. Subsequent second sequential process includes: immersing the capacitor element in a second liquid which dissolves a cyclic organic compound having at least one hydroxyl group; taking out the capacitor element from the second liquid; and drying the capacitor element.