A capacitor manufacturing method described herein includes a process for the isolation of edges of electrode foils in an electrolytic capacitor after slitting the electrode foils from a mother foil. For example, a coating process may be incorporated into the capacitor manufacturing so that the edges of the electrode foils may undergo isolation with a deposition of a layer of epoxy or resin. A manufacturing machine that incorporates a resin coating process may be positioned in the manufacturing line, such that the edges of the slit electrode foils undergo a deposition of a coating of an electrical isolator, such as a polymer, an epoxy, a resin, a ceramic, and/or an oxide layer. As another example, a combined foil with interleaving conducting bands and isolating strips may also be used to form the electrode foils with isolated edges.

A capacitor includes a capacitor element having electrode foils on the anode side and the cathode side laminated via separators, connecting parts of terminal components being disposed inside a laminated portion of the electrode foils and the separators, the connecting parts being connected to the electrode foils on the anode side and the cathode side; and a case that includes a storage part storing the capacitor element and having an opening portion sealed by a sealing body, that has a crimped part crimped from the outside of the storage part toward a side surface of the capacitor element, and that holds the capacitor element with the crimped part. The case is crimped to form the crimped part while avoiding a position at which the electrode foils of the capacitor element in the storage part overlap with tip portions of the connecting parts of the terminal components.

A can for an electrolytic capacitor is disclosed. In an embodiment a can for an electrolytic capacitor includes a bottom including a first area and a second area, wherein the first area is recessed relative to the second area at an outer surface of the bottom of the can.

An electrolytic capacitor includes a capacitor element and an electrolyte solution. The capacitor element includes: an anode foil on which a dielectric layer is formed; a cathode foil which is opposite to the anode foil; and a conductive polymer layer that is interposed between the anode foil and the cathode foil, conductive polymer layer including a conductive polymer. A conductive layer provided with a carbon layer including conductive carbon is formed on the cathode foil. The conductive polymer layer is a layer formed with use of a dispersion or a solution containing the conductive polymer. And a proportion of water in the electrolyte solution ranges from 0.1% by mass to 6.0% by mass, inclusive.

A hybrid polymer aluminum electrolytic capacitor and a method for manufacturing a capacitor are disclosed. In an embodiment a hybrid polymer aluminum electrolytic capacitor includes a winding element having a diameter of more than 10 mm, at least two tabs electrically contacted with an anode foil and at least two tabs electrically contacted with a cathode foil.

An electrolytic capacitor includes an anode body including a dielectric layer, a cathode body, and a conductive polymer layer and a liquid component that are disposed between the anode body and the cathode body. The cathode body includes a base material part having an outer surface that is roughened surface and has a pore opened at the outer surface, and an inorganic conductive layer covering at least a part of the outer surface. The base material part includes a first coating layer disposed along at least a part of inner wall of the pore. The first coating layer contains phosphorus.

An electrical storage device includes an electrical storage element and an electrolytic solution. The electrical storage element is formed of an anode body, a cathode body facing the anode body, and a separator interposed between the anode body and the cathode body. The separator includes a separator substrate and a conductive polymer adhering to the separator substrate. The electrical storage element is impregnated with the electrolytic solution. The separator includes a first surface layer having a first surface facing the anode body and a second surface layer having a second surface facing the cathode body. The first surface layer includes a first region that is not provided with the conductive polymer, and the second surface layer includes a second region provided with the conductive polymer.

The present disclosure provides a capacitor package structure and an anti-oxidation electrode foil thereof. The anti-oxidation electrode foil includes a base material structure, a first conductive material structure, and a first carbonaceous material structure. The base material structure has a top surface and a bottom surface. The first conductive material structure is disposed on the top surface of the base material structure. The first carbonaceous material structure is disposed on the first conductive material structure. One portion of the first conductive material structure is a first oxygenated metal compound for contacting the first carbonaceous material structure. The first oxygen-containing metal compound layer is disposed between the other portion of the first conductive material structure and the first carbonaceous material structure so as to prevent oxygen from contacting the other portion of the first conductive material structure.

A solid electrolytic capacitor (1) includes an anode foil (2a) having formed thereon an oxide film, a cathode foil (2c), and a separator (2d), and is equipped with a solid electrolyte (20) formed of an electroconductive polymer compound in a fine particle form, and a water-soluble compound solution (30) introduced to surround the solid electrolyte (20), the solid electrolyte (20) contains a polyol compound having a molecular weight of less than 200 and a number of hydroxy groups of 4 or more as a first water-soluble compound (2f1), the water-soluble compound solution (30) contains one kind or multiple kinds of a glycol compound in a liquid form as a second water-soluble compound (2f2), and the second water-soluble compound (2f2) has an average molecular weight of less than 400.

A method for forming a polymer composite material on a capacitor element is provided. The method includes a preparing step, an impregnating step, a drying step and a polymerization step. The preparing step includes forming a homogeneous reaction solution including 3,4-ethylenedioxythiophene, an emulsifier, poly(styrenesulfonate), an initiator and water. The impregnating step includes impregnating the capacitor element into the homogeneous reaction solution to form a reaction layer on the capacitor element. The drying step includes heating the reaction layer to remove water in the reaction layer. The polymerization step includes heating the reaction layer to initiate a polymerization reaction between the 3,4-ethylenedioxythiophene and the poly(styrenesulfonate) to form a conductive polymer layer at least including a conductive polymer material.