ELECTRODE FOIL FOR ELECTROLYTIC CAPACITOR AND MANUFACTURING METHOD THEREOF, AND ELECTROLYTIC CAPACITOR

• Main Authors: YOSHIMURA MITSUHISA, TSUBAKI MASAMI, KADOKAWA SOJI
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

To provide a method for manufacturing an electrode foil and an electrolytic capacitor, capable of increasing the capacity of an electrolyte capacitor.SOLUTION: A manufacturing method in a device 300 includes the steps of: preparing a second metal foil 352 with a roughened surface by electrolytic etching on a first metal foil 351; adhering a compound, which contains an adsorption part adsorbing to the second metal foil and a hydrophobic part, on the surface of the second metal foil by processing the second metal foil with a process liquid 321 including the compound; and roughening the surface of the second metal foil furthermore by electrolytic etching on the second metal foil, where the compound adheres, in an aqueous solution.SELECTED DRAWING: Figure 1 【課題】電解コンデンサの高容量化が可能な電極箔の製造方法ならびに電解コンデンサを提供する。【解決手段】装置３００における製造方法は、第１の金属箔３５１を電解エッチングすることによって、表面が粗面化された第２の金属箔352を作製する工程と、第２の金属箔を、第２の金属箔に吸着する吸着部と疎水性部とを含有する化合物を含む処理液３２１で処理することによって、第２の金属箔の表面に上記化合物を付着させる工程と、上記化合物が付着した第２の金属箔を水溶液中で電解エッチングすることによって、第２の金属箔の表面をさらに粗面化する工程とを含む。【選択図】図１