MANUFACTURING METHOD OF ELECTROLYTIC CAPACITOR

• Main Authors: TSUBAKI YUICHIRO, AOYAMA TATSUJI
• Format: Patent
• Language: English; Japanese
• Published: 20.08.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

To provide a manufacturing method of an electrolytic capacitor capable of solving a disadvantage that since the dielectric layer is formed by the surface treatment of the anode foil, there are originally many defects causing a leakage current.SOLUTION: Disclosed manufacturing method of an electrolytic capacitor includes: a first step of preparing a capacitor element having an anode body in which a dielectric layer is formed; a second step of allowing the capacitor element to be impregnated with a first treatment liquid that contains at least a conductive polymer and a first solvent; and a third step of, after the second step, allowing the capacitor element to be impregnated with a second treatment liquid containing a polyol compound containing at least one selected from the group consisting of erythritol, pentaerythritol, xylitol, and mannitol.SELECTED DRAWING: Figure 1 【課題】誘電体層は、陽極箔の表面処理により形成されるため、本来、欠陥が多く、このような欠陥は、漏れ電流発生の原因となり易いものであった。【解決手段】本発明の電解コンデンサの製造方法は、誘電体層が形成された陽極体を備えるコンデンサ素子を準備する第１工程と、前記コンデンサ素子に、導電性高分子と第１溶媒とを少なくとも含む第１処理液を含浸させる第２工程と、前記第２工程の後、前記コンデンサ素子に、エリスリトール、ペンタエリスリトール、キシリトール、およびマンニトールからなる群より選択される少なくとも一種を含むポリオール化合物を含む第２処理液を含浸させる第３工程と、を含むことを特徴とする。【選択図】図１