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[NiFe]-(Oxy)Sulfides Derived from NiFe₂O₄ for the Alkaline Hydrogen Evolution Reaction

Title data

Tetzlaff, David ; Alagarasan, Vasanth ; Simon, Christopher ; Siegmund, Daniel ; junge Puring, Kai ; Marschall, Roland ; Apfel, Ulf-Peter:
[NiFe]-(Oxy)Sulfides Derived from NiFe₂O₄ for the Alkaline Hydrogen Evolution Reaction.
In: Energies. Vol. 15 (2022) Issue 2 . - No. 543.
ISSN 1996-1073
DOI: https://doi.org/10.3390/en15020543

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

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 NiFe2O4 (NFO) nanoparticles in H2S-containing atmospheres. The variation in H2S 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.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 09 Mar 2022 07:05
Last Modified: 09 Mar 2022 07:05
URI: https://eref.uni-bayreuth.de/id/eprint/68881