Hydrogen adsorption trends on various metal-doped Ni2P surfaces for optimal catalyst design

Lauri Partanen, Mikko Hakala, Kari Laasonen*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

17 Citations (Scopus)
152 Downloads (Pure)

Abstract

In this study, we looked at the hydrogen evolution reaction on Mg-, Mo-, Fe-, Co-, V-, and Cu-doped Ni3P2 and Ni3P2 + P terminated Ni2P surfaces. The DFT calculated hydrogen adsorption free energy was employed as a predictor of the materials' catalytic HER activity. Our results indicate that doping can substantially improve the catalytic activity of the Ni3P2 terminated surface. In contrast, the Ni3P2 + P terminated one seems to be catalytically active irrespective of the type of doping, including in the absence of doping. Based on our doping energy and adsorption free energy calculations, the most promising dopants are iron and cobalt, whereas copper is less likely to function well as a doping element.

Original languageEnglish
Pages (from-to)184-191
Number of pages8
JournalPhysical Chemistry Chemical Physics
Volume21
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • SCANNING-TUNNELING-MICROSCOPY
  • NICKEL PHOSPHIDE
  • EFFICIENT ELECTROCATALYST
  • EVOLUTION REACTION
  • NANOSHEET ARRAY
  • PSEUDOPOTENTIALS
  • PHOTOEMISSION
  • DIFFRACTION
  • NI2P(001)
  • ELECTRODE

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