Shin-Etsu Polymer Co., Ltd.

Sachiko Ode

Tailu Ning

Michiko Shingai

Provided is a solid electrolytic capacitor which retains a high capacitance and a low ESR and has high heat resistance. The solid electrolytic capacitor () is obtained by winding a porous anode foil () having a dielectric layer formed thereon and a cathode foil () together with separators () each interposed therebetween, the separators () having a solid electrolyte () supported thereon. Each layer of the solid electrolyte comprises a conductive composite (a) of a cationized conductive polymer with a polymer anion, a first hydroxy compound (b) having four or more hydroxy groups, and a second hydroxy compound (c) having an amino group and one or more hydroxy groups, the content of the conductive composite (a), in terms of mass proportion, being lower than that of the first hydroxy compound (b) and higher than that of the second hydroxy compound (c).

Solid electrolytic capacitor, method for producing the same and solution for solid electrolytic capacitor

A solid electrolytic capacitor that is able to maintain a high capacitance and low ESR, and also exhibits a high degree of heat resistance. The solid electrolytic capacitorcomprises at least an anode bodycomposed of a porous material, a dielectric layerformed on the surface of the anode body, and a cathode body, wherein the solid electrolytic capacitor has a solid electrolyte layerformed in contact with the dielectric layer, the solid electrolyte layercomprises at least a hydroxy compound having three or more hydroxyl groups, and the hydroxy compound has a melting point of not less than 170&#xb0; C.

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Saitama, Japan

Sachiko Ode