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Rapid preparation of high efficiency hydrogen evolution catalyst with hydrophilicity

Authors
  • Wei, Kuo
  • Pang, Shanshan
  • Meng, Ying
  • Feng, Lingling
  • Wang, Yuanzhe
  • Zhou, Junshuang
  • Hu, Hao
  • Song, Yanli
  • Gao, Faming
Type
Published Article
Journal
Nanotechnology
Publisher
IOP Publishing
Publication Date
Oct 30, 2023
Volume
35
Issue
3
Identifiers
DOI: 10.1088/1361-6528/ad0053
Source
ioppublishing
Keywords
Disciplines
  • Energy at the nanoscale
License
Unknown

Abstract

The electrolytic water method is an outstanding hydrogen production process because of its high stability and no restriction. A low-priced and efficient catalyst for electro-deposition of Ni–Co microspheres and nanoclusters on carbon steel (Ni–Co/CS) has been prepared by the dynamic hydrogen bubble template. In the 6 M KOH solution, Ni–Co/CS only requires an overpotential of 48 mV to provide a current density of 50 mA cm−2. At the same time, it also has a large electrochemically active specific surface area (ECSA) and a hydrophilic surface. In addition, the study about the influence of carbon steel (CS) on Ni–Co coatings and the comparison experiment for different base materials has been completed. The results prove that CS is an excellent base material for hydrogen production. It can help the Ni–Co catalyst to have a stable electrolysis in 6 M KOH for 500 h. The above properties of Ni–Co/CS catalyst make it a new choice of hydrogen production by electrolysis of water in practical applications.

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