Journal of Electrochemical Science and Technology

  • 제13권1호
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  • Pages.54-62
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  • 2022
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  • 2093-8551(pISSN)
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  • 2288-9221(eISSN)
한국전기화학회 (The Korean Electrochemical Society)
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Fabrication of Ni-Mo-based Electrocatalysts by Modified Zn Phosphating for Hydrogen Evolution Reaction

  • Im, Han Seo (Department of Chemistry and Research Institute for Basic Science, Kyung Hee University) ;
  • Park, Seon Ha (Department of Chemistry and Research Institute for Basic Science, Kyung Hee University) ;
  • Ha, Hyo Jeong (Department of Chemistry and Research Institute for Basic Science, Kyung Hee University) ;
  • Lee, Sumin (Department of Chemistry and Research Institute for Basic Science, Kyung Hee University) ;
  • Heo, Sungjun (Department of Chemistry and Research Institute for Basic Science, Kyung Hee University) ;
  • Im, Sang Won (Department of Materials Science and Engineering, Seoul National University) ;
  • Nam, Ki Tae (Department of Materials Science and Engineering, Seoul National University) ;
  • Lim, Sung Yul (Department of Chemistry and Research Institute for Basic Science, Kyung Hee University)
  • 투고 : 2021.09.07
  • 심사 : 2021.10.08
  • 발행 : 2022.02.28
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초록

The preparation of low-cost, simple, and scalable electrodes is crucial for the commercialization of water electrolyzers for H2 production. Herein, we demonstrate the fabrication of cathodes through Mo-modified Zn phosphating of Ni foam (NiF) for water electrolysis, which has been largely utilized in surface coating industry. In situ growth of electrocatalytically active layers in the hydrogen evolution reaction (HER) was occurred after 1 min of phosphating to form ZnNiMoPi, and subsequent thermal treatment and electrochemical activation resulted in the formation of ZnNiMoPOxHy. ZnNiMoPOxHy exhibited superior HER performance than NiF, primarily because of the increased electrochemically active surface area of ZnNiMoPOxHy compared to that of bare NiF. Although further investigations to improve the intrinsic electrochemical activity toward the HER and detailed mechanistic studies are required, these results suggest that phosphating is a promising coating method and will possibly advance the fabrication procedure of electrodes for water electrolyzers with better practical applications.

키워드

과제정보

This research was supported by a grant from the National Research Foundation of Korea (NRF) grants (2021R1A4A5032876 and 2021R1C1C1012503) funded by Ministry of Science and ICT (MSIT).

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