Carbon nanotubes-molybdenum disulfide composite for enhanced hydrogen evolution reaction

Molybdenum disulfide, supported by a carbon nanotube matrix fabricated through the hydrothermal method, is found to be an alternative catalyst for enhanced hydrogen evolution reactions. The improved performance of carbon nanotube and molybdenum disulfide (CNT-MoS2) composites is attributed to the synergic effects of CNT and MoS2 that provide a good conducting network as well as a large surface area, increasing catalytic activity for the hydrogen evolution reaction. The synthesized CNT-MoS2 composite provides a low overpotential (-0.14 V), much lower than MoS2 itself (-0.29 V), at a current density of 10 mA cm(-2). The CNT-MoS2 composite shows lower resistance (24 Omega) compared to the MoS2 precursor (1000 0) at a frequency of 3000 Hz, demonstrating an improved composite conductivity. The CNT-MoS2 composite also exhibits high stability and excellent durability.