METHOD OF MANUFACTURING SOLID ELECTROLYTIC CAPACITOR

• Main Authors: SAKAMAKI AKIRA, KIYOUBA YOSHIAKI, ITO TADAHITO, TAKEYA YUTAKA
• Format: Patent
• Language: English
• Published: 28.02.2003
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

PROBLEM TO BE SOLVED: To provide such a niobium anode/conductive polymer cathode capacitor as is high in capacity emersion percentage and can reduce a leak current enough by aging treatment. SOLUTION: A manufacturing method for a solid electrolytic capacitor is equipped with a process of forming a first conductive polymer layer consisting of polypyrrole or a polypyrrole dielectric on a dielectric film layer by soaking an anode, where a dielectric film layer is made, in the solution containing hydrogen peroxide by 0.7-10 wt.% and surfuric acid by 0.3-3 wt.% and containing water as its main solvent and exposing it to the steam of pyrrole or a pyrrole dielectric after pull up, and a process of forming a second conductive polymer layer on the first conductive polymer layer by soaking an anode, where a dielectric film layer and a first conductive polymer layer are made, in the solution containing polymeric monomer and a supporting electrolyte and electrolytically polymerizing the above polymeric monomer in that solution.