Nanostructure MoS2 electrocatalyst modified large area carbon electrode for efficient hydrogen evolution

Hydrothermally synthesized nanostructured MoS2 was immobilized over large area graphite paper (5 x 5 mm(2)) to fabricate electrode for hydrogen evolution application. The chemical optimization via. variation in hydroxylamine hydrochloride(HAH) concentration, led to nanosheets containing surface over the micro-balls, with a 1T and 2H phase of MoS2. A physicochemical and electrochemical characterization yielded a lowest Tafel slope of similar to 67 mV dec(-1), a lowest over potential of 0.19 V with a significant electrocatalytic stability in acidic. An electrocatalytic hydrogen evolution over optimized MoS2 evolved 2 times (similar to 46 mu mol h(-1)) of hydrogen gas as compared to that from MoS2 synthesized without HAH. The improved performance of electrocatalyst can be attributed to the combination of phase, and electrochemical properties 2D structure of MoS2.