Title:
DIAPHRAGM FOR ALKALINE WATER ELECTROLYSIS, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2016/203701
Kind Code:
A1
Abstract:
The diaphragm according to the present invention is provided with a porous support and a polymer porous film impregnated in the support from one surface of the support. When one surface of the porous film is specified as A, the surface on the reverse side thereof from the surface A is specified as B, a cross section of the porous film parallel to the surface A and the surface B is specified as the cross section C, the average pore diameter in the surface A is specified as DA, the average pore diameter in the surface B is specified as DB, and the average pore diameter in the cross section C is specified as DC, the average pore diameter DA and the average pore diameter DB are essentially the same, and the average pore diameter DC is greater than the average pore diameter DA and the average pore diameter DB. When a cross section or surface parallel to the surface A and the surface B in an impregnated region of the porous film is specified as face S, and the average pore diameter in the face S is specified as DS, the average pore diameter DS is equal to or greater than the average pore diameter DA or the average pore diameter DB and is less than a lower-limit value of the bubble diameter distribution of bubbles generated at an electrode in alkaline water electrolysis.
Inventors:
ITO TAKAFUMI
SHIMOMURA IKUO
KAMEI YUJI
MANABE AKIYOSHI
KATO AKIHIRO
HASHIMOTO TERUMI
SHIMOMURA IKUO
KAMEI YUJI
MANABE AKIYOSHI
KATO AKIHIRO
HASHIMOTO TERUMI
Application Number:
PCT/JP2016/002378
Publication Date:
December 22, 2016
Filing Date:
May 16, 2016
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
DE NORA PERMELEC LTD (JP)
THYSSENKRUPP UHDE CHLORINE ENG (JAPAN) LTD (JP)
DE NORA PERMELEC LTD (JP)
THYSSENKRUPP UHDE CHLORINE ENG (JAPAN) LTD (JP)
International Classes:
C25B13/02; C25B1/10; C25B9/00; C25B13/08
Domestic Patent References:
| WO2000020493A1 | 2000-04-13 |
Foreign References:
| JP2013204146A | 2013-10-07 | |||
| JP2014129563A | 2014-07-10 | |||
| JPS6393309A | 1988-04-23 | |||
| JPS62280231A | 1987-12-05 | |||
| JPH09313905A | 1997-12-09 | |||
| JP2013204146A | 2013-10-07 | |||
| US20130337368A1 | 2013-12-19 | |||
| JP2011025110A | 2011-02-10 | |||
| JP2009185333A | 2009-08-20 | |||
| EP1298740A2 | 2003-04-02 | |||
| US20110111122A1 | 2011-05-12 |
Other References:
SMOLDERS C A; ET AL: "Microstructures in phase-inversion membranes. Part 1. Formation of macrovoids", JOURNAL OF MEMBRANE SCIENCE, vol. 73, 1992, pages 259 - 275, XP000362054
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Patent business corporation Owner old patent firm (JP)
Patent business corporation Owner old patent firm (JP)
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