Overall electrochemical splitting of water at the heterogeneous interface of nickel and iron oxide

Abstract Efficient generation of hydrogen from water-splitting is an underpinning chemistry to realize the hydrogen economy. Low cost, transition metals such as nickel and iron-based oxides/hydroxides have been regarded as promising catalysts for the oxygen evolution reaction in alkaline media with overpotentials as low as ~200 mV to achieve 10 mA cm −2 , however, they are generally unsuitable for the hydrogen evolution reaction. Herein, we show a Janus nanoparticle catalyst with a nickel–iron oxide interface and multi-site functionality for a highly efficient hydrogen evolution reaction with a comparable performance to the benchmark platinum on carbon catalyst. Density functional theory calculations reveal…

• AN
  Australian Nuclear Science and Technology Organisation
• NC
  National Computational Infrastructure

  Award: FT170100224
• AG
  Australian Government

  Award: FT170100224
• AC
  Analytical Center for the Government of the Russian Federation
• AS
  Australian Synchrotron
• UO
  University of New South Wales
• UO
  University of Wollongong
• GO
  Government of Western Australia
• NC
  National Cancer Institute