Abstract
Sustainable hydrogen generation from water electrolysis using renewable energy sources is the most promising pathway for future energy and hydrogen economy. Here, the Chevrel phase $$(\hbox {Cu}_{1.8}\hbox {Mo}_{6}\hbox {S}_{8})$$ was synthesized in composite with $$\hbox {Mo}_{2}\hbox {C}$$ and good hydrogen evolution activity in acidic media has been demonstrated. Bundles of nanowires were formed in the templated synthesis route. The composites were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy and elemental analysis. Detailed electrochemical analysis reveals that MCS-Cu50 composite exhibits higher hydrogen evolution reaction (HER) activity with $$71.4\,\hbox {mA}\,\mathrm{cm}^{-2}$$ current density at an overpotential of 400 mV. It requires 250 mV overpotential to produce $$10\,\hbox {mA}\,\mathrm{cm}^{-2}$$ current density for HER.
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