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Yonas S.♦, Gicha B.B.♦, Adhikari S.♦, Sabir F.K.♦, Tran V.T.♦, Nwaji N., Gonfa B.A.♦, Teshome Tufa L.♦, Electric-Field-Assisted Synthesis of Cu/MoS2 Nanostructures for Efficient Hydrogen Evolution Reaction,
Micromachines, ISSN: 2072-666X, DOI: 10.3390/mi15040495, Vol.15, No.495, pp.1-13, 2024 Abstract:
Molybdenum sulfide–oxide (MoS2, MS) emerges as the prime electrocatalyst candidate demonstrating hydrogen evolution reaction (HER) activity comparable to platinum (Pt). This study presents a facile electrochemical approach for fabricating a hybrid copper (Cu)/MoS2 (CMS) nanos- tructure thin-film electrocatalyst directly onto nickel foam (NF) without a binder or template. The synthesized CMS nanostructures were characterized utilizing energy-ispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), X-ray diffraction (XRD), and electrochemical methods. The XRD result revealed that the Cu metal coating on MS results in the creation of an extremely crys-talline CMS nanostructure with a well-defined interface. The hybrid nanostructures demonstrated
higher hydrogen production, attributed to the synergistic interplay of morphology and electron dis-tribution at the interface. The nanostructures displayed a significantly low overpotential of −149 mV at 10 mA cm−2 and a Tafel slope of 117 mV dec−1, indicating enhanced catalytic activity compared to pristine MoS2.This research underscores the significant enhancement of the HER performance and
conductivity achieved by CMS, showcasing its potential applications in renewable energy. Keywords:
electrodeposition, hydrogen evolution reactions, catalytic activity, Cu/MoS2 nanostructures Affiliations:
| Yonas S. | - | other affiliation | | Gicha B.B. | - | other affiliation | | Adhikari S. | - | other affiliation | | Sabir F.K. | - | other affiliation | | Tran V.T. | - | other affiliation | | Nwaji N. | - | IPPT PAN | | Gonfa B.A. | - | other affiliation | | Teshome Tufa L. | - | other affiliation |
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