Phase Directing Ability of an Ionic Liquid Solvent for the Synthesis of HER-Active Ni2P Nanocrystals

Emily J. Roberts, Carlos G. Read, Nathan S. Lewis, Richard L. Brutchey

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12 Citations (Scopus)


An ionic liquid (IL) solvent was used to synthesize small, phase-pure nickel phosphide (Ni2P) nanocrystals. In contrast, under analogous reaction conditions, substitution of the IL for the common high-boiling organic solvent 1-octadecene (ODE) results in phase-impure nanocrystals. The 5 nm Ni2P nanocrystals prepared in IL were electrocatalytically active toward the hydrogen evolution reaction. The synthesis in IL was also extended to alloyed Ni2-xCoxP nanocrystals, where 0.5 ≤ x ≤ 1.5.

Original languageEnglish
Pages (from-to)1823-1827
Number of pages5
JournalACS Applied Energy Materials
Issue number5
Publication statusPublished - May 29 2018



  • electrocatalyst
  • hydrogen evolution reaction
  • ionic liquid
  • nanocrystal
  • nickel phosphide

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Materials Chemistry
  • Electrical and Electronic Engineering

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