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1. (WO2018139616) ELECTROLYTIC BATH, ELECTROLYSIS DEVICE, ELECTROLYSIS METHOD, AND METHOD FOR PRODUCING HYDROGEN

Pub. No.:    WO/2018/139616    International Application No.:    PCT/JP2018/002590
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Jan 27 00:59:59 CET 2018
IPC: C25B 9/00
C25B 1/10
C25B 9/02
C25B 9/20
C25B 13/02
C25B 15/08
Applicants: ASAHI KASEI KABUSHIKI KAISHA
旭化成株式会社
Inventors: HOTTA Shinya
堀田 真也
YOKOTA Masahisa
横田 昌久
FUJIMOTO Norikazu
藤本 則和
KOMURA Ryo
小村 亮
UCHINO Yousuke
内野 陽介
SUZUKI Yusuke
鈴木 悠介
Title: ELECTROLYTIC BATH, ELECTROLYSIS DEVICE, ELECTROLYSIS METHOD, AND METHOD FOR PRODUCING HYDROGEN
Abstract:
The purpose of the present invention is to increase energy conversion efficiency and suppress an increase in the temperature of an electrolytic solution in alkaline water electrolysis in which an electrolytic bath having a zero-gap structure is used. [Solution] the present invention is: an electrolytic bath in which a plurality of elements provided with a positive electrode, a negative electrode, a partition wall, and an outer frame are superposed on each other so as to sandwich diaphragms therebetween, a zero-gap structure being formed in which the diaphragms are in contact with the positive electrodes and the negative electrodes, and a plurality of flow-straightening plates being provided to an electrode chamber, the electrolytic bath being characterized in that the length A of the electrode chamber is 0.40 m to 4.0 m, the length B of the electrode chamber is 0.0030 m to 0.030 m, and the interval C between the flow-straightening plates is 0.050 m to 0.19 m; an electrolytic bath for alkaline water electrolysis; an electrolysis device; a water electrolysis method; and a method for producing hydrogen.