Title:
ANODE CATALYST, WATER ELECTROLYSIS CELL, AND WATER ELECTROLYSIS CELL STACK
Document Type and Number:
WIPO Patent Application WO/2024/058161
Kind Code:
A1
Abstract:
This anode catalyst contains an oxide that has a perovskite structure which contains divalent or trivalent metal ions as A site ions, while containing tetravalent or trivalent metal ions and iridium ions as B site ions; in cases where the alkaline earth metal ions include strontium ions, the B site ions include at least tin ions; and if rB is the ion radius of the B site ions, ri is the ion radius of the tetravalent or trivalent metal ions i contained in the B site ions, mi is the molar concentration of the tetravalent or trivalent metal ions i contained in the B site ions, rIr is the ion radius of the iridium ions, and mIr is the molar concentration of the iridium ions, the ion radius difference between the B site ions and the iridium ions as defined by formula (rB - rIr) is -0.0120 to 0.0700.
Inventors:
MURAKOSHI RIHO (JP)
UNEMOTO ATSUSHI (JP)
UNEMOTO ATSUSHI (JP)
Application Number:
PCT/JP2023/033169
Publication Date:
March 21, 2024
Filing Date:
September 12, 2023
Export Citation:
Assignee:
TOKYO GAS CO LTD (JP)
International Classes:
C25B11/081; B01J23/58; B01J23/62; C25B1/04; C25B9/00; C25B11/052; C25B11/093
Domestic Patent References:
| WO2016156599A1 | 2016-10-06 |
Other References:
VOS JOHANNES G., LIU ZHICHAO, SPECK FLORIAN D., PERINI NICKSON, FU WENTIAN, CHEREVKO SERHIY, KOPER MARC T. M.: "Selectivity Trends Between Oxygen Evolution and Chlorine Evolution on Iridium-Based Double Perovskites in Acidic Media", ACS CATALYSIS, AMERICAN CHEMICAL SOCIETY, US, vol. 9, no. 9, 6 September 2019 (2019-09-06), US , pages 8561 - 8574, XP093146197, ISSN: 2155-5435, DOI: 10.1021/acscatal.9b01159
ZHANG QI, LIANG XIAO, CHEN HUI, YAN WENSHENG, SHI LEI, LIU YIPU, LI JIAYU, ZOU XIAOXIN: "Identifying Key Structural Subunits and Their Synergism in Low-Iridium Triple Perovskites for Oxygen Evolution in Acidic Media", CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, US, vol. 32, no. 9, 12 May 2020 (2020-05-12), US , pages 3904 - 3910, XP093146199, ISSN: 0897-4756, DOI: 10.1021/acs.chemmater.0c00081
HIRAI SHIGETO, YAGI SHUNSUKE, OH HE-CHAN, SATO YOSHIKI, LIU WEI, LIU EN-PEI, CHEN WEI-TIN, MIURA AKIRA, NAGAO MASANORI, OHNO TOMOY: "Highly active and stable surface structure for oxygen evolution reaction originating from balanced dissolution and strong connectivity in BaIrO 3 solid solutions", RSC ADVANCES, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 12, no. 37, 22 August 2022 (2022-08-22), GB , pages 24427 - 24438, XP093146201, ISSN: 2046-2069, DOI: 10.1039/D2RA04624E
ZHANG QI, LIANG XIAO, CHEN HUI, YAN WENSHENG, SHI LEI, LIU YIPU, LI JIAYU, ZOU XIAOXIN: "Identifying Key Structural Subunits and Their Synergism in Low-Iridium Triple Perovskites for Oxygen Evolution in Acidic Media", CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, US, vol. 32, no. 9, 12 May 2020 (2020-05-12), US , pages 3904 - 3910, XP093146199, ISSN: 0897-4756, DOI: 10.1021/acs.chemmater.0c00081
HIRAI SHIGETO, YAGI SHUNSUKE, OH HE-CHAN, SATO YOSHIKI, LIU WEI, LIU EN-PEI, CHEN WEI-TIN, MIURA AKIRA, NAGAO MASANORI, OHNO TOMOY: "Highly active and stable surface structure for oxygen evolution reaction originating from balanced dissolution and strong connectivity in BaIrO 3 solid solutions", RSC ADVANCES, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 12, no. 37, 22 August 2022 (2022-08-22), GB , pages 24427 - 24438, XP093146201, ISSN: 2046-2069, DOI: 10.1039/D2RA04624E
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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