Title:
SOLID POLYMER-TYPE WATER ELECTROLYSIS MEMBRANE-ELECTRODE JOINT BODY AND WATER ELECTROLYSIS DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/085206
Kind Code:
A1
Abstract:
Provided are a solid polymer-type water electrolysis membrane-electrode joint body and a water electrolysis device, which can achieve a low electrolytic voltage and can suppress degradation of a fluorine-containing polymer included therein. A solid polymer-type water electrolysis membrane-electrode joint body according to the present invention: includes a solid polymer electrolysis membrane containing a fluorine-containing polymer having an ion exchange group, a cathode catalyst layer disposed on one surface side of the solid polymer electrolysis membrane and containing a fluorine-containing polymer having an ion exchange group, and an anode catalyst layer disposed on the other surface side of the solid polymer electrolysis membrane; contains cerium ions in a region overlapping the cathode catalyst layer when the surface of the solid polymer-type water electrolysis membrane-electrode joint body is observed in a normal line direction; and satisfies the relation of formula (X). In formula (X), ACe represents the substance quantity of cerium ions contained in said region, and AIEG_C represents the substance quantity of the ion exchange groups in the fluorine-containing polymer contained in the cathode catalyst layer. Formula (X): (ACe×3)/AIEG_C≤0.90
Inventors:
OKUYAMA TAKUMI (JP)
Application Number:
PCT/JP2022/041156
Publication Date:
May 19, 2023
Filing Date:
November 04, 2022
Export Citation:
Assignee:
AGC INC (JP)
International Classes:
C25B9/23; C25B1/04; C25B9/00; C25B11/052; C25B11/069; C25B13/04; C25B13/08
Domestic Patent References:
| WO2020116647A1 | 2020-06-11 | |||
| WO2019088299A1 | 2019-05-09 | |||
| WO2020116645A1 | 2020-06-11 |
Foreign References:
| JP2019125429A | 2019-07-25 | |||
| JP2019083123A | 2019-05-30 | |||
| JP2018060789A | 2018-04-12 |
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
Download PDF:
Previous Patent: ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING ELECTRONIC COMPONENT
Next Patent: LOAD ADJUSTMENT SYSTEM AND LOAD ADJUSTMENT METHOD
Next Patent: LOAD ADJUSTMENT SYSTEM AND LOAD ADJUSTMENT METHOD