Title:
BIPOLAR ZERO GAP ELECTROLYTIC CELL FOR WATER ELECTROLYSIS
Document Type and Number:
WIPO Patent Application WO/2021/256472
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an electrolysis device compatible with a variable power source and capable of effectively producing hydrogen over a wide range of current densities. A bipolar zero gap electrolytic cell for water electrolysis according to the present invention is characterized in that: a plurality of bipolar elements each comprising an anode chamber equipped with an anode, a cathode chamber equipped with a cathode, a conductive partition wall provided between the anode chamber and the cathode chamber, and an outer frame framing the conductive partition wall, are stacked with a gasket and a barrier film interposed therebetween; there is a protrusion on at least one surface of the conductive partition wall; a conductive elastic body is disposed between an electrode and the surface of the conductive partition wall on the opposite side from the aforementioned one surface; conduction with the conductive partition wall is generated by one electrode via at least the protrusion and by the other electrode via at least the conductive elastic body; and the barrier film is sandwiched between the anode and the cathode of neighboring bipolar elements by means of elastic stress from the conductive elastic body.
Inventors:
WATANABE AKIRA (JP)
FUJIMOTO NORIKAZU (JP)
UCHINO YOUSUKE (JP)
YAMAURA HIROSHIGE (JP)
FUJIMOTO NORIKAZU (JP)
UCHINO YOUSUKE (JP)
YAMAURA HIROSHIGE (JP)
Application Number:
PCT/JP2021/022740
Publication Date:
December 23, 2021
Filing Date:
June 15, 2021
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
C25B13/02; C25B1/04; C25B9/00; C25B9/23
Domestic Patent References:
| WO2019111832A1 | 2019-06-13 |
Foreign References:
| JPH0649675A | 1994-02-22 | |||
| JPH03249189A | 1991-11-07 | |||
| JPS62502125A | 1987-08-20 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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