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The depletion of fossil fuel reserves an‎d the growing importance of clean energy have made hydrogen a promising alternative fuel, sparking significant interest in its production methods. One of the best ways to produce hydrogen is through water splitting. This reaction consists of two main half-reactions: the Hydrogen Evolution Reaction (HER) an‎d the Oxygen Evolution Reaction (OER). Using an effective electrocatalyst is crucial for making these reactions efficient.So far, the most common catalysts used for HER have been ruthenium (Ru), platinum (Pt), an‎d iridium (Ir). However, these are too expensive for large-scale industrial use.In this study, we aimed to create a suitable an‎d low-cost electrocatalyst for HER. We used a nickel-molybdenum sulfide nanocomposite because its electronic structure an‎d high catalytic activity make it a very promising can‎didate for improving hydrogen production. This material was applied as a layer onto a copper foam substrate, which itself was grown on a graphite rod. We analyzed the structure of these nanoparticles using several characterization techniques: X-ray diffraction (XRD), scanning electron microscopy (SEM), an‎d energy-dispersive X-ray spectroscopy (EDX). To test their electrochemical performance, we used methods like linear sweep voltammetry (LSV) an‎d electrochemical impedance spectroscopy (EIS).Our electrochemical tests showed that the NiMoS/Cu/GR electrocatalyst performs exceptionally well for HER. The results of electrochemical tests show that the NiMoS/Cu Foam/GR electrocatalyst with an overpotential of -79 mV at a current density of 100 mA.cm-2 an‎d a Tafel slope of 57.8 mV.dec-1 of has very good performance for HER. Ultimately, our fabrication method is low-cost an‎d doesnʹt require any binders. Combined with the high catalytic activity an‎d excellent stability of our optimized NiMoS sample, this makes the electrode a strong can‎didate for commercial applications.

پوشش NiMoS/Cu , واكنش تكاملي هيدروژن , ميله گرافيتي , الكتروليز آب , كاتاليزگر

NiMoS/Cu coating , Hydrogen evolution reaction , Graphite Rod , Water electrolysis , Electrocatalyst

Zahra Montazer

Ali Ghaffarinejad