[NiFe]-(Oxy)sulfides derived from \(NiFe_{2}O-{4}\) for the alkaline hydrogen evolution reaction
- 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.
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| Author: | David TetzlaffGND, Vasanth AlagarasanGND, Christopher SimonGND, Daniel SiegmundORCiDGND, Kai Junge PuringORCiDGND, Roland MarschallORCiDGND, Ulf-Peter ApfelORCiDGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-86976 |
| DOI: | https://doi.org/10.3390/en15020543 |
| Parent Title (English): | Energies |
| Publisher: | MDPI |
| Place of publication: | Basel |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2022/03/09 |
| Date of first Publication: | 2022/01/13 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Tag: | alkaline hydrogen evolution reaction; electrocatalysis; hydrogen; oxysulfide |
| Volume: | 15 |
| Issue: | 2, Article 543 |
| First Page: | 543-1 |
| Last Page: | 543-9 |
| Institutes/Facilities: | Lehrstuhl für Anorganische Chemie I, Bioanorganische Chemie |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie |
| open_access (DINI-Set): | open_access |
| faculties: | Fakultät für Chemie und Biochemie |
| Licence (English): |  Creative Commons - CC BY 4.0 - Attribution 4.0 International |
