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[NiFe]-(Oxy)Sulfides Derived from NiFe 2 O 4 for the Alkaline Hydrogen Evolution Reaction

Author

Listed:
  • David Tetzlaff

    (Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, 46047 Oberhausen, Germany
    Inorganic Chemistry I, Ruhr University Bochum, 44780 Bochum, Germany)

  • Vasanth Alagarasan

    (Inorganic Chemistry I, Ruhr University Bochum, 44780 Bochum, Germany)

  • Christopher Simon

    (Physical Chemistry III, University of Bayreuth, 95447 Bayreuth, Germany)

  • Daniel Siegmund

    (Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, 46047 Oberhausen, Germany
    Inorganic Chemistry I, Ruhr University Bochum, 44780 Bochum, Germany)

  • Kai junge Puring

    (Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, 46047 Oberhausen, Germany)

  • Roland Marschall

    (Physical Chemistry III, University of Bayreuth, 95447 Bayreuth, Germany)

  • Ulf-Peter Apfel

    (Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, 46047 Oberhausen, Germany
    Inorganic Chemistry I, Ruhr University Bochum, 44780 Bochum, Germany)

Abstract

The development of noble-metal-free electrocatalysts is regarded as a key factor for realizing industrial-scale hydrogen production powered by renewable energy sources. Inspired by nature, which uses Fe- and Ni-containing enzymes for efficient hydrogen generation, Fe/Ni-containing chalcogenides, such as oxides and sulfides, received increasing attention as promising electrocatalysts to produce hydrogen. We herein present a novel synthetic procedure for mixed Fe/Ni (oxy)sulfide materials by the controlled (partial) sulfidation of NiFe 2 O 4 (NFO) nanoparticles in H 2 S-containing atmospheres. The variation in H 2 S concentration and the temperature allows for a precise control of stoichiometry and phase composition. The obtained sulfidized materials (NFS) catalyze the hydrogen evolution reaction (HER) with increased activity in comparison to NFO, up to −10 and −100 mA cm −2 at an overpotential of approx. 250 and 450 mV, respectively.

Suggested Citation

  • David Tetzlaff & Vasanth Alagarasan & Christopher Simon & Daniel Siegmund & Kai junge Puring & Roland Marschall & Ulf-Peter Apfel, 2022. "[NiFe]-(Oxy)Sulfides Derived from NiFe 2 O 4 for the Alkaline Hydrogen Evolution Reaction," Energies, MDPI, vol. 15(2), pages 1-9, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:2:p:543-:d:723553
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