Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing an electrolytic capacitor which allows the occurrence of short-circuit to be suppressed in a so-called hybrid type electrolytic capacitor.SOLUTION: A method for manufacturing an electrolytic capacitor comprises the steps of: forming a capacitor element 12 having a positive electrode foil 12A having a dielectric layer on a surface thereof, and a solid electrolytic layer 122 in contact with the dielectric layer 121 of the positive electrode foil 12A; impregnating the capacitor element 12 with an electrolytic solution 16; and sealing the capacitor element 12 together with the electrolytic solution 16 in an outer sheath 15. The electrolytic solution 16 impregnated into the capacitor element 12 includes a first solvent including polyalkylene glycol or a derivative thereof.
Abstract:
PROBLEM TO BE SOLVED: To provide a solid electrolytic capacitor improved in performance under a high-voltage environment.SOLUTION: A solid electrolytic capacitor includes a porous sintered anode, a dielectric layer overlapping an anode body, and a solid electrolyte overlapping the dielectric layer. The anode is formed from a fine powder having a comparatively high specific charge. In spite of using the high specific charge powder, a high voltage can be achieved by combining features relating to formation of the anode and the solid electrolyte. A "sintering neck" can be achieved between neighboring aggregated particles of a relatively large size by using a comparatively high press density and a sintering temperature, and the "sintering neck" makes a dielectric layer near the neck unlikely to be defective by a high formation voltage. The solid electrolyte is formed from a plurality of preliminary polymerized conductive polymer particles capable of minimizing use of a high energy radical (e.g., Feor Feion) which may otherwise deteriorate insulation.
Abstract translation:要解决的问题:提供在高压环境下提高性能的固体电解电容器。解决方案:固体电解电容器包括多孔烧结阳极,与阳极体重叠的电介质层和与电介质层重叠的固体电解质。 阳极由具有较高比电荷的细粉末形成。 尽管使用高比电荷粉末,但是通过组合与阳极和固体电解质的形成相关的特征可以实现高电压。 通过使用比较高的压力密度和烧结温度,可以在相对较大尺寸的相邻聚集颗粒之间实现“烧结颈”,并且“烧结颈”使靠近颈部的电介质层不可能由于高的形成而有缺陷 电压。 固体电解质由能够最小化使用高能自由基(例如Fe Fe 3 Fe 3)的多个预聚合的导电聚合物颗粒形成,否则可能会使绝缘变差。
Abstract:
PROBLEM TO BE SOLVED: To obtain a high withstand voltage, in a capacitor using the oxide film of an electrode in a dielectric layer.SOLUTION: The capacitor includes an anode 1 composed of a metal, a first dielectric layer 3 formed on the surface of the anode 1 and containing an oxide of a metal composing the anode 1, a cathode 2 composed of a metal, and a second dielectric layer 4 formed on the surface of the cathode 2 and containing an oxide of a metal composing the cathode 2. The first dielectric layer 3 and the second dielectric layer 4 are facing each other, and the anode 1 and cathode 2 are laminated.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a solid electrolyte capacitor having high nominal voltage, low equivalent series resistance and low residual current.SOLUTION: A method for manufacturing a solid electrolyte capacitor comprises at least: the step a) that a porous electrode body (2) of an electrode material receives anodic oxidation in order to form a dielectric (3) covering the surface of the electrode material; the step b) of applying a dispersion liquid A) including at least conductive polymer particles B) and a dispersant D) on a porous body including at least the porous electrode body (2) of the electrode material and the dielectric (3); and the step c) of at least partly removing and/or curing the dispersant D) in order to form a solid electrolyte (4) completely or partly covering the dielectric surface. A maximum anodizing voltage is higher than 30 V during anodizing the porous electrode body (2), and the conductive polymer particles B) in the dispersion liquid A) have an average diameter of 1-100 nm.