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Title:
METHOD FOR MANUFACTURING SOLID ELECTROLYTIC CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2019/044044
Kind Code:
A1
Abstract:
The present invention provides a method for manufacturing a solid electrolytic capacitor having: a step (A) for polymerizing a monomer for obtaining a conjugated electroconductive polymer in a dispersion medium containing seed particles which have been formed into protective colloids by means of polyanions or a dispersion medium containing polyanions, and obtaining a conjugated electroconductive polymer-containing dispersion; a step (B) for adding a morpholine compound to the conjugated electroconductive polymer-containing dispersion and preparing a dispersion containing the morpholine compound and the conjugated electroconductive polymer; a step (C) for having the dispersion adhere to a porous positive electrode body comprising a valve action metal having a dielectric coating film on the surface thereof; and a step (D) for removing the dispersion medium from the dispersion containing the morpholine compound and the conjugated electroconductive polymer adhering to the porous positive electrode body and forming a solid electrolyte layer. The method of the present invention makes it possible to obtain a solid electrolyte capacitor having a high capacitance-generating ratio (capacitance), an excellent heat resistance, and a high reliability in high-temperature conditions.

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Inventors:
ARAKI MOTOAKI (JP)
OKUBO TAKASHI (JP)
Application Number:
PCT/JP2018/017998
Publication Date:
March 07, 2019
Filing Date:
May 09, 2018
Export Citation:
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Assignee:
SHOWA DENKO KK (JP)
International Classes:
H01G9/028; H01G9/00
Domestic Patent References:
WO2014136796A12014-09-12
WO2014163202A12014-10-09
WO2016103616A12016-06-30
WO2016088300A12016-06-09
WO2014163202A12014-10-09
Foreign References:
JP2014024905A2014-02-06
JP2003100561A2003-04-04
JP2005109252A2005-04-21
JP2011510141A2011-03-31
US8721928B22014-05-13
US9640325B22017-05-02
JP2005076016A2005-03-24
JP2007332183A2007-12-27
JP2011077257A2011-04-14
Other References:
See also references of EP 3678152A4
Attorney, Agent or Firm:
OHIE Kunihisa et al. (JP)
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