Title:
REDUCTION CATALYST FOR WATER ELECTROLYSIS AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/245068
Kind Code:
A1
Abstract:
The present invention relates to: a method for preparing a reduction catalyst for water electrolysis, using protective coating; a reduction electrode for alkaline water electrolysis, comprising a reduction catalyst prepared thereby; and an alkaline water electrolysis system. The method for preparing a reduction catalyst for water electrolysis of the present invention applies a protective coating method and inhibits the growth of alloy particles in a later high-temperature heat treatment step, and, thus, can prepare and provide a catalyst with a high alloying degree. As a result, a non-precious metal alloy catalyst prepared according to the method of the present invention has excellent catalytic characteristics by exhibiting hydrogen evolution reaction (HER) performance similar to that of platinum, which is a precious metal catalyst.
Inventors:
ROH CHIWOO (KR)
KIM HANSUNG (KR)
KIM GIL HO (KR)
SONG KYU HO (KR)
KIM HANSUNG (KR)
KIM GIL HO (KR)
SONG KYU HO (KR)
Application Number:
PCT/KR2022/006941
Publication Date:
November 24, 2022
Filing Date:
May 13, 2022
Export Citation:
Assignee:
HANWHA SOLUTIONS CORP (KR)
YONSEI UNIV UNIV – INDUSTRY FOUNDATION UIF (KR)
YONSEI UNIV UNIV – INDUSTRY FOUNDATION UIF (KR)
International Classes:
B01J37/08; B01J21/18; B01J35/00; B01J37/02; C25B1/04; C25B9/23; C25B11/089
Foreign References:
| KR20130123263A | 2013-11-12 | |||
| KR20200048454A | 2020-05-08 |
Other References:
WANG TENG, GUO YANRU, ZHOU ZHENXING, CHANG XINGHUA, ZHENG JIE, LI XINGGUO: "Ni–Mo Nanocatalysts on N-Doped Graphite Nanotubes for Highly Efficient Electrochemical Hydrogen Evolution in Acid", ACS NANO, AMERICAN CHEMICAL SOCIETY, US, vol. 10, no. 11, 22 November 2016 (2016-11-22), US , pages 10397 - 10403, XP093006438, ISSN: 1936-0851, DOI: 10.1021/acsnano.6b06259
CHEONGHEE KIM; FABIO DIONIGI; VERA BEERMANN; XINGLI WANG; TIM MÖLLER; PETER STRASSER: "Alloy Nanocatalysts for the Electrochemical Oxygen Reduction (ORR) and the Direct Electrochemical Carbon Dioxide Reduction Reaction (CO2RR)", ADVANCED MATERIALS, VCH PUBLISHERS, DE, vol. 31, no. 31, 20 December 2018 (2018-12-20), DE , pages n/a - n/a, XP071874829, ISSN: 0935-9648, DOI: 10.1002/adma.201805617
DARBAND, Ghasem Barati et al. Electrodeposition of Ni–Co–Fe mixed sulfide ultrathin nanosheets on Ni nanocones: a low-cost, durable and high performance catalyst for electrochemical water splitting. Nanoscale. 2019, vol. 11, pp. 16621-16634.
CHEONGHEE KIM; FABIO DIONIGI; VERA BEERMANN; XINGLI WANG; TIM MÖLLER; PETER STRASSER: "Alloy Nanocatalysts for the Electrochemical Oxygen Reduction (ORR) and the Direct Electrochemical Carbon Dioxide Reduction Reaction (CO2RR)", ADVANCED MATERIALS, VCH PUBLISHERS, DE, vol. 31, no. 31, 20 December 2018 (2018-12-20), DE , pages n/a - n/a, XP071874829, ISSN: 0935-9648, DOI: 10.1002/adma.201805617
DARBAND, Ghasem Barati et al. Electrodeposition of Ni–Co–Fe mixed sulfide ultrathin nanosheets on Ni nanocones: a low-cost, durable and high performance catalyst for electrochemical water splitting. Nanoscale. 2019, vol. 11, pp. 16621-16634.
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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