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Title:
MANUFACTURING METHOD FOR SOLID ELECTROLYTIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2011/013375
Kind Code:
A1
Abstract:
The surface layer of a niobium-containing anode body is formed into a dielectric layer by means of a chemical treatment method that involves a process (I) for the electrolytic formation of the niobium-containing anode body in a chemical solution comprising nitric acid and phosphoric acid in a temperature range from 40°C to the boiling point of the chemical solution, a process (II) for heating said electrolytically formed anode body in a temperature range from 150°C to 300°C, and a process (III) for the electrolytic formation of the aforementioned heated anode body in the chemical solution comprising nitric acid and phosphoric acid in a temperature range from 40°C to the boiling point of the chemical solution. A solid electrolytic capacitor element is obtained by forming a cathode upon said dielectric layer, and a solid electrolytic capacitor is obtained by covering said element.

Inventors:
NAKAMURA HIDENORI (JP)
SHIBUYA YOSHINORI (JP)
Application Number:
PCT/JP2010/004805
Publication Date:
February 03, 2011
Filing Date:
July 29, 2010
Export Citation:
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Assignee:
SHOWA DENKO KK (JP)
NAKAMURA HIDENORI (JP)
SHIBUYA YOSHINORI (JP)
International Classes:
H01G9/04; H01G9/00
Domestic Patent References:
WO2004068517A12004-08-12
WO2007020969A12007-02-22
Foreign References:
JP2005325830A2005-11-24
JP2002246273A2002-08-30
JP2002198266A2002-07-12
JP2005057057A2005-03-03
JP2005325380A2005-11-24
JPH07220982A1995-08-18
Other References:
See also references of EP 2461337A4
Attorney, Agent or Firm:
KIKUMA, TADAYUKI (JP)
Tadayuki Kikuma (JP)
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