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Electrolytic capacitor and method for manufacturing same

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TLDR
In this paper, the first oxide film on a surface of the anode foil, a solid electrolyte layer formed using π-conjugated conductive polymer dispersing material on the oxide film, and a cathode foil facing the first film across the solid electrolytes layer.
Abstract
A capacitor element includes an anode foil, the first oxide film on a surface of the anode foil, a solid electrolyte layer formed using π-conjugated conductive polymer dispersing material on the first oxide film, and a cathode foil on the solid electrolyte layer. The cathode foil faces the first oxide film across the solid electrolyte layer. An electrolytic capacitor includes the capacitor element, an anode terminal connected to the anode foil, and a second oxide film on a surface of the anode terminal. The second oxide film provided on the anode terminal has higher water repellency than the first oxide film provided on the anode foil. This electrolytic capacitor can reduce a leakage current.

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References
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Patent

Electrolyte for driving electrolytic capacitor

TL;DR: In 1989, JPO&Japio as discussed by the authors proposed to improve the corrosion resistance of an electrolyte without affecting other characteristics thereof, such as conductivity, discharging voltage, etc., by adding and dissolving at least one additive selected from the group consisting of iminodiacetic acid and its salts.
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Solid electrolytic capacitor

TL;DR: In this paper, a porous tantalum sintered body is anode-oxidized to form a dielectric film composed of a tantalum oxide on the surface.
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Conductive composition and conductive cross-linked product, capacitor and production method thereof, and antistatic coating material, antistatic coating, antistatic film, optical filter, and optical information recording medium

TL;DR: In this article, an anode composed of a porous material of valve metal, a dielectric layer formed by oxidizing the surface of the anode, and a cathode provided on the dielectrics layer and having a solid electrolyte layer containing a π conjugated conductive polymer, which comprises an electron donor compound, a solubilizing polymer containing an anion group and/or an electron attractive group, a nitrogen-containing aromatic cyclic compound.
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Solid electrolytic capacitor and its manufacture

TL;DR: In this paper, a dielectric oxide film is impregnated with ethylene dioxy thiophene (EDT) or an EDT solution of specified density for a specified time for adhering EDT on the Dielectric Oxide film.
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Method for manufacturing electrolytic capacitor and electrolytic capacitor

TL;DR: In this article, a method of manufacturing an electrolytic capacitor including the following steps as well as an electrostatic capacitance manufactured by the method is provided, which includes: a dispersion impregnation step of impregnating, with the dispersion containing electrically conductive solid particles or powder and a solvent, a capacitor element having an anode foil with a dielectric coating film formed thereon and an opposite cathode foil that are wound with a separator interposed therebetween; a dry step of evaporating the solvent after the dispregnation to form an