METHOD FOR MANUFACTURING SOLID ELECTROLYTIC CAPACITOR, AND SOLID ELECTROLYTIC CAPACITOR

Title:

METHOD FOR MANUFACTURING SOLID ELECTROLYTIC CAPACITOR, AND SOLID ELECTROLYTIC CAPACITOR

Document Type and Number:

WIPO Patent Application WO/2014/034201

Kind Code:

A1

Abstract:

Provided are: a method for manufacturing a solid electrolytic capacitor having excellent ESR characteristics; and a solid electrolytic capacitor. A method for manufacturing a solid electrolytic capacitor, wherein an anode body is obtained by forming a dielectric oxide coating film on the surface of a sintered body that is formed by sintering a molded body formed of a valve-acting metal powder or on the surface of a roughened valve-acting metal foil, and a solid electrolyte layer is formed on the surface of the anode body. This method for manufacturing a solid electrolytic capacitor is characterized by comprising, as steps for forming a solid electrolyte layer: a projection forming step (S3) wherein projections formed of manganese dioxide and having an average diameter of 10-102 nm are formed on the surface of the dielectric oxide coating film so that the projections are scattered about like islands and the surface coverage is 1-20%; and a conductive polymer layer forming step (S4) wherein a conductive polymer layer is formed on the surfaces of the projections and the dielectric oxide coating film.

Inventors:

AOKI KIYOFUMI (JP)
AGEO HIROMASA (JP)
TATSUNO JUNYA (JP)
INAZAWA KOJI (JP)

Application Number:

PCT/JP2013/064501

Publication Date:

March 06, 2014

Filing Date:

May 24, 2013

Export Citation:

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Assignee:

AVX CORP (US)
AVX TANTALUM ASIA CORP (JP)

International Classes:

H01G9/032; H01G9/00; H01G9/028

Foreign References:

JP2005123605A	2005-05-12
JPH0396210A	1991-04-22
JP2008263167A	2008-10-30
JPH0669082A	1994-03-11
JP2006147900A	2006-06-08

Other References: