Facile synthesis of MoS2/CuS nanoflakes as high performance electrocatalysts for hydrogen evolution reaction

The fabrication of metal sulfides heterostructure is a promising strategy for enhancing catalytic activity. Herein, the MoS2/CuS heterostructure was successfully grown on carbon cloth (MoS2/CuS/CC) through an efficient method. The SEM results confirmed that the fabricated MoS2/CuS/CC composites have a flake morphology, which can not only improves the surface area but also offers ample surface catalytic active sites. Particularly, the optimized MoS2/CuS/CC-2 electrocatalyst showed a small overpotential of 85 [email protected] mA cm−2 and exceptional long-term cycling durability for hydrogen evolution in 1 M KOH. The outstanding catalytic activity is attributed to the fact that the combination of MoS2 with CuS can greatly enhance the charge transport rate and improve the structural stability. These results suggest that the MoS2/CuS/CC heterostructure is a potential electrocatalyst for hydrogen production.