Title:
ELECTRODE CATALYST AND WATER ELECTROLYSIS CELL
Document Type and Number:
WIPO Patent Application WO/2023/095791
Kind Code:
A1
Abstract:
Provided is an electrode catalyst having high activity as a catalyst for a water electrolysis cell anode, as well as excellent electrical conductivity. Through the present invention, there is provided an electrode catalyst comprising a carrier powder and active particles supported on the carrier powder, the carrier powder being an aggregate of carrier fine particles provided with chain parts formed by fusion bonding of a plurality of crystallites into chains, the carrier fine particles including a metal oxide doped with a doping element, the main elements of the metal oxide including tin, the active particles including a platinum-group oxide including a platinum-group element, and the carrying rate of the active particles being 25 mass% or greater.
Inventors:
KAKINUMA KATSUYOSHI (JP)
UCHIDA MAKOTO (JP)
IIYAMA AKIHIRO (JP)
UCHIDA MAKOTO (JP)
IIYAMA AKIHIRO (JP)
Application Number:
PCT/JP2022/043188
Publication Date:
June 01, 2023
Filing Date:
November 22, 2022
Export Citation:
Assignee:
UNIV YAMANASHI (JP)
International Classes:
C25B11/054; B01J23/46; B01J23/62; C01B13/02; C25B1/04; C25B9/00; C25B9/23; C25B11/037; C25B11/052; C25B11/067; C25B11/081
Domestic Patent References:
| WO2011065471A1 | 2011-06-03 |
Foreign References:
| JP2016047524A | 2016-04-07 | |||
| JP2020500692A | 2020-01-16 |
Other References:
PUTHIYAPURA VINOD KUMAR; PASUPATHI SIVAKUMAR; SU HUANENG; LIU XIAOTENG; POLLET BRUNO; SCOTT KEITH: "Investigation of supported IrO2as electrocatalyst for the oxygen evolution reaction in proton exchange membrane water electrolyser", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 39, no. 5, 25 December 2013 (2013-12-25), AMSTERDAM, NL, pages 1905 - 1913, XP028668626, ISSN: 0360-3199, DOI: 10.1016/j.ijhydene.2013.11.056
OHNO HIDEAKI, NOHARA SHINJI, KAKINUMA KATSUYOSHI, UCHIDA MAKOTO, UCHIDA HIROYUKI: "Effect of Electronic Conductivities of Iridium Oxide/Doped SnO2 Oxygen-Evolving Catalysts on the Polarization Properties in Proton Exchange Membrane Water Electrolysis", CATALYSTS, vol. 9, no. 1, 1 January 2019 (2019-01-01), pages 1 - 12, XP093068493, DOI: 10.3390/catal9010074
OHNO HIDEAKI, NOHARA SHINJI, KAKINUMA KATSUYOSHI, UCHIDA MAKOTO, UCHIDA HIROYUKI: "Effect of Electronic Conductivities of Iridium Oxide/Doped SnO2 Oxygen-Evolving Catalysts on the Polarization Properties in Proton Exchange Membrane Water Electrolysis", CATALYSTS, vol. 9, no. 1, 1 January 2019 (2019-01-01), pages 1 - 12, XP093068493, DOI: 10.3390/catal9010074
Attorney, Agent or Firm:
SK INTELLECTUAL PROPERTY LAW FIRM et al. (JP)
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