Title:
BIPOLAR ELECTROLYTIC CELL, BIPOLAR ELECTROLYTIC VESSEL, AND METHOD FOR MANUFACTURING HYDROGEN
Document Type and Number:
WIPO Patent Application WO/2018/139609
Kind Code:
A1
Abstract:
The purpose of the present invention is to control increases in electrolyte temperature by increasing energy conversion efficiency in alkali water electrolysis using a bipolar electrolytic cell having a zero-gap structure. This bipolar electrolytic cell for alkali water electrolysis is characterized in that a plurality of elements that include a positive electrode and a negative electrode are stacked sandwiching barrier membranes, the barrier membranes are in contact with the positive electrodes and negative electrodes to form the zero-gap structure, the difference ΔH (|Ha − Hc|) of the heat generation coefficient Ha [K/sec] for the positive electrodes defined by Equation (1) and the heat generation coefficient Hc [K/sec] for the negative electrodes defined by Equation (2) in the zero-gap structure is 12 K/sec or less, and the coefficient of linear expansion of the barrier membrane is 0.5 × 10-5 – 5.0 × 10-5 [1/K)].
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Inventors:
NAKAJIMA YASUHIRO (JP)
FUJIMOTO NORIKAZU (JP)
HIRANO TOSHIYUKI (JP)
FUJIMOTO NORIKAZU (JP)
HIRANO TOSHIYUKI (JP)
Application Number:
PCT/JP2018/002579
Publication Date:
August 02, 2018
Filing Date:
January 26, 2018
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
C25B15/00; C25B1/08; C25B9/00; C25B9/20; C25B11/03; C25B11/08
Domestic Patent References:
| WO2013191140A1 | 2013-12-27 |
Foreign References:
| JP2015183254A | 2015-10-22 | |||
| US4530743A | 1985-07-23 | |||
| JPS59173281A | 1984-10-01 |
Other References:
See also references of EP 3575444A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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