| Autor: |
Yonas S; Department of Applied Chemistry, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia., Gicha BB; Research Institute of Materials Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea., Adhikari S; Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea., Sabir FK; Department of Applied Chemistry, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia., Tran VT; Faculty of Biotechnology, Chemistry and Environmental Engineering, Phenikaa University, Hanoi 10000, Vietnam., Nwaji N; Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, Poland., Gonfa BA; Department of Applied Chemistry, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia., Tufa LT; Department of Applied Chemistry, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia.; Research Institute of Materials Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea. |
| Abstrakt: |
Molybdenum sulfide-oxide (MoS 2 , 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)/MoS 2 (CMS) nanostructure thin-film electrocatalyst directly onto nickel foam (NF) without a binder or template. The synthesized CMS nanostructures were characterized utilizing energy-dispersive 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 crystalline CMS nanostructure with a well-defined interface. The hybrid nanostructures demonstrated higher hydrogen production, attributed to the synergistic interplay of morphology and electron distribution 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 MoS 2 .This research underscores the significant enhancement of the HER performance and conductivity achieved by CMS, showcasing its potential applications in renewable energy. |
