Title:
NANO FLAKE-SHAPED SPINEL OXIDATION CATALYST FOR ANION EXCHANGE MEMBRANE WATER ELECTROLYSIS AND PREPARATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/048503
Kind Code:
A1
Abstract:
The present invention relates to an oxidation catalyst for anion exchange membrane water electrolysis exhibiting excellent catalytic activity and electrical conductivity and a large surface area, a preparation method for the catalyst, and an oxidation electrode for anion exchange membrane water electrolysis and an anion exchange membrane water electrolysis system, each comprising the catalyst. The oxidation catalyst for anion exchange membrane water electrolysis of the present invention comprises a spinel-based oxide and is prepared by precisely controlling the use or non-use of a complexing agent and pH while using co-precipitation, so that the catalyst has a reduced catalytic particle size to facilitate high-viscosity and uniform dispersion, has a nano-sized flake structure to enable uniform coating of ionomers between flakes, and has a widen surface area through the formation of a porous structure to attain excellent catalytic activity.
Inventors:
KIM GIL HO (KR)
PARK JOUNG HOON (KR)
WOO WAN JONG (KR)
SONG KYU HO (KR)
ROH CHIWOO (KR)
PARK JOUNG HOON (KR)
WOO WAN JONG (KR)
SONG KYU HO (KR)
ROH CHIWOO (KR)
Application Number:
PCT/KR2022/014263
Publication Date:
March 30, 2023
Filing Date:
September 23, 2022
Export Citation:
Assignee:
HANWHA SOLUTIONS CORP (KR)
International Classes:
B01J21/00; B01J23/75; B01J23/755; B01J35/02; B01J35/10; B01J37/00; B01J37/03; B01J37/08; C25B1/04
Foreign References:
| KR20210077384A | 2021-06-25 | |||
| KR20200119097A | 2020-10-19 | |||
| KR20180112853A | 2018-10-12 |
Other References:
HUANG YI, ZHANG SONG LIN, LU XUE FENG, WU ZHI‐PENG, LUAN DEYAN, LOU XIONG WEN (DAVID): "Trimetallic Spinel NiCo 2− x Fe x O 4 Nanoboxes for Highly Efficient Electrocatalytic Oxygen Evolution", ANGEWANDTE CHEMIE INTERNATIONAL EDITION, VERLAG CHEMIE, HOBOKEN, USA, vol. 60, no. 21, 17 May 2021 (2021-05-17), Hoboken, USA, pages 11841 - 11846, XP093053579, ISSN: 1433-7851, DOI: 10.1002/anie.202103058
GIBIN S. R.; SIVAGURUNATHAN P.: "Synthesis and characterization of nickel cobalt ferrite (Ni1−xCoxFe2O4) nano particles by co-precipitation method with citrate as chelating agent", JOURNAL OF MATERIALS SCIENCE: MATERIALS IN ELECTRONICS, CHAPMAN AND HALL, LONDON., GB, vol. 28, no. 2, 5 October 2016 (2016-10-05), GB , pages 1985 - 1996, XP036146716, ISSN: 0957-4522, DOI: 10.1007/s10854-016-5755-z
GIBIN S. R.; SIVAGURUNATHAN P.: "Synthesis and characterization of nickel cobalt ferrite (Ni1−xCoxFe2O4) nano particles by co-precipitation method with citrate as chelating agent", JOURNAL OF MATERIALS SCIENCE: MATERIALS IN ELECTRONICS, CHAPMAN AND HALL, LONDON., GB, vol. 28, no. 2, 5 October 2016 (2016-10-05), GB , pages 1985 - 1996, XP036146716, ISSN: 0957-4522, DOI: 10.1007/s10854-016-5755-z
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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