[NiFe]-(Oxy)Sulfides Derived from NiFe2O4 for the Alkaline Hydrogen Evolution Reaction
نویسندگان
چکیده
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 nature, which uses Fe- and Ni-containing enzymes efficient generation, Fe/Ni-containing chalcogenides, such oxides sulfides, received increasing attention promising to produce hydrogen. We herein present novel synthetic procedure mixed Fe/Ni (oxy)sulfide materials the controlled (partial) sulfidation NiFe2O4 (NFO) nanoparticles in H2S-containing atmospheres. variation H2S concentration temperature allows precise control stoichiometry phase composition. obtained sulfidized (NFS) catalyze evolution reaction (HER) with increased activity comparison NFO, up −10 −100 mA cm−2 at an overpotential approx. 250 450 mV, respectively.
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ژورنال
عنوان ژورنال: Energies
سال: 2022
ISSN: ['1996-1073']
DOI: https://doi.org/10.3390/en15020543