An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolyte solution. The solid electrolyte layer includes a -conjugated conductive polymer. The electrolyte solution contains a solvent and a solute, and the solvent contains a glycol compound and a sulfone compound. A proportion of the glycol compound contained in the solvent is 10% by mass or more. A proportion of the sulfone compound contained in the solvent is 30% by mass or more. A total proportion of the glycol compound and the sulfone compound contained in the solvent is 70% by mass or more.

The electricity storage device includes: a first conductivity-type first oxide semiconductor; a solid electrolyte layer disposed on the first oxide semiconductor layer, the solid electrolyte layer including a solid electrolyte enabling proton movement; an insulator layer disposed between the solid electrolyte layer and the first oxide semiconductor layer, the insulator layer including an insulating material; and a second conductivity-type second oxide semiconductor layer disposed on the solid electrolyte layer. Provided is the electricity storage device having the increased electricity storage capacity and improved reliability that can be charged without degradation even when the charging voltage is increased.

A dielectric of the present disclosure includes a composite oxide including at least two selected from the group consisting of Nb, Bi, and Ta, wherein the following requirement (I), (II), or (III) is satisfied: (I) the composite oxide includes Nb, Bi, and Ta; (II) the composite oxide includes Nb and Bi and is amorphous; and (III) the composite oxide includes Bi and Ta and is amorphous.

A dielectric of the present disclosure includes a composite oxide including at least two selected from the group consisting of Nb, Bi, and Ta, wherein the following requirement (I), (II), or (III) is satisfied: (I) the composite oxide includes Nb, Bi, and Ta; (II) the composite oxide includes Nb and Bi and is amorphous; and (III) the composite oxide includes Bi and Ta and is amorphous.

The invention pertains to a conductive material formulation comprising: (a) a conductive polymer material; and (b) an insulation material, wherein the conductive polymer material is derived from a conductive polymer and a polyanion and has a weight average molecular weight ranging from 3,000 to 30,000; and wherein the (b) insulation material is present in an amount of 0.01 part to 200 parts by weight based on 100 parts by weight of the (a) conductive polymer material. The conductive material formulation according to the invention is useful for the preparation of solid capacitors.

The invention pertains to a conductive material formulation comprising: (a) a conductive polymer material; and (b) an insulation material, wherein the conductive polymer material is derived from a conductive polymer and a polyanion and has a weight average molecular weight ranging from 3,000 to 30,000; and wherein the (b) insulation material is present in an amount of 0.01 part to 200 parts by weight based on 100 parts by weight of the (a) conductive polymer material. The conductive material formulation according to the invention is useful for the preparation of solid capacitors.

A method is provided for producing a homogenous particulate material composition, including at least one particulate material M, at least one additive Z, and at least one binding agent B, the method including providing at least one particulate material M, at least one additive Z, and at least one binding agent B; producing a homogenous mixture G1 from the at least one particulate material M and the at least one additive Z in a gravity mixer; producing a mixture G2 from the mixture G1 and the at least one binding agent B, with the introduction of shear forces; and removing dispersed gases from the mixture G2.

A method is provided for producing a homogenous particulate material composition, including at least one particulate material M, at least one additive Z, and at least one binding agent B, the method including providing at least one particulate material M, at least one additive Z, and at least one binding agent B; producing a homogenous mixture G1 from the at least one particulate material M and the at least one additive Z in a gravity mixer; producing a mixture G2 from the mixture G1 and the at least one binding agent B, with the introduction of shear forces; and removing dispersed gases from the mixture G2.

An improved capacitor, and method of manufacturing the improved capacitor, is provided. The method includes deoxygenating and leaching the anode wire to produce a capacitor comprising an anode having a surface area of at least 4.0 m.sup.2/g or a charge density of at least 200,000 CV/g with the anode wire having an equivalent diameter of less than 0.30 mm extending from said anode. A dielectric is on the anode and a cathode is on the dielectric.

A solid electrolytic capacitor and method for making the capacitor are provided. The capacitor includes a porous anode body, an anode foil, a dielectric, a cathode, and anode and cathode terminations. The foil is disposed on a planar surface of the anode body, and both comprise a valve metal. Further, the dielectric overlies at least a portion of the anode body, and the dielectric is also formed within the anode body. The cathode overlies at least a portion of the dielectric that overlies the anode body and includes a solid electrolyte, where at least a portion of a lower surface of the foil is free of both the dielectric and the solid electrolyte. In addition, the anode termination is electrically connected to the portion of the lower surface of the foil that is free of both the dielectric and the solid electrolyte, and the cathode termination is electrically connected to the solid electrolyte.