Electrochemically fabricated NiCu alloy catalysts for hydrogen production in alkaline water electrolysis

Sang Hyun Ahn, Hee Young Park, Insoo Choi, Sung Jong Yoo, Seung Jun Hwang, Hyoung Juhn Kim, Eunae Cho, Chang Won Yoon, Hansoo Park, Hyungbin Son, Juan Martin Hernandez, Suk Woo Nam, Tae Hoon Lim, Soo Kil Kim, Jong Hyun Jang

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

NiCu alloy catalysts for alkaline water electrolysis were prepared by an electrodeposition method varying the alloy composition. When the deposition potential became more positive, the bulk and surface Cu content in NiCu alloys as well as the catalyst particle size gradually increased, which were confirmed by various spectroscopic and electrochemical techniques. The surface coverage of the catalysts was found to be a function of the deposition potential, as well. The catalytic activities of the prepared NiCu alloys to hydrogen evolution reaction (HER) were investigated with cyclic voltammetry in a 6.0 M KOH electrolyte at 298 K, and the mass activities of NiCu alloys were correlated with bulk and surface Cu contents to investigate the Cu alloying effect.

Original languageEnglish
Pages (from-to)13493-13501
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number31
DOIs
Publication statusPublished - 2013 Oct 17

Keywords

  • Alkaline water electrolysis
  • Electrodeposition
  • Hydrogen evolution reaction
  • Nickel copper alloy catalyst

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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    Ahn, S. H., Park, H. Y., Choi, I., Yoo, S. J., Hwang, S. J., Kim, H. J., Cho, E., Yoon, C. W., Park, H., Son, H., Hernandez, J. M., Nam, S. W., Lim, T. H., Kim, S. K., & Jang, J. H. (2013). Electrochemically fabricated NiCu alloy catalysts for hydrogen production in alkaline water electrolysis. International Journal of Hydrogen Energy, 38(31), 13493-13501. https://doi.org/10.1016/j.ijhydene.2013.07.103