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Electrochemical fabrication of Ni-P-B ternary catalyst for hydrogen production in proton exchange membrane water electrolyzer

Authors
Hong, SeokjinKim, HyunkiKim, JunhyungHan, Gyeong HoKim, Soo YoungAhn, Sang Hyun
Issue Date
Apr-2022
Publisher
WILEY
Keywords
binary-nonmetal transition metal compounds; cathode catalyst; hydrogen evolution reaction; Ni-P-B catalyst; proton exchange membrane water electrolyzer
Citation
INTERNATIONAL JOURNAL OF ENERGY RESEARCH, v.46, no.5, pp 5988 - 5996
Pages
9
Journal Title
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
Volume
46
Number
5
Start Page
5988
End Page
5996
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/52719
DOI
10.1002/er.7538
ISSN
0363-907X
1099-114X
Abstract
Hydrogen production via water electrolysis, which is crucial for addressing climate change, is limited due to the high cost and insufficient activity of the catalyst. Binary-nonmetal transition metal compounds are promising candidates for the hydrogen evolution reaction (HER) owing to the synergetic effect between metal and nonmetal elements. Herein, we report the facile fabrication of Ni phospho-boride catalysts and their compositional effects on HER activity. By controlling the deposition conditions, the elemental compositions were changed to modulate their electronic structures. Particularly, the HER intrinsic activity showed a volcano relationship based on the elemental P content. The optimized catalyst was prepared on a highly roughened substrate, which could be used as a cathode for a proton exchange membrane electrolyzer (PEMWE) single cell. A current density of 1.08 A cm(-2) was obtained at a cell voltage of 2.0 V, which is comparable to state-of-the-art PEMWE single cell comprising nonnoble cathodes.
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공과대학 (화학공학과)
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