Molybdenum disulfide/reduced graphene oxideMoS₂/RGO) composites with different mass ratios were synthesized by hydrothermal method with reduced graphene oxide，ammonium molybdate and thiourea as raw materials.The structure and morphology of the composites were characterized by X-ray diffraction(XRD)，Raman spectroscopy(Raman)，scanning electron microscopy(SEM) and transmission electron microscopy(TEM).The results showed that when the mass ratio of MoS₂/RGO was 1∶2，the interlayer compound formed was well dispersed，and MoS₂ was anchored on the surface of RGO to form a heterostructure.The electrocatalytic hydrogen evolution performance of MoS₂/RGO was studied by electrochemical test.It was found that the HER process may be caused by the Volmer-Heyrovsky mechanism，which is first a rapid discharge process and then by the electrochemical desorption process.The electrochemical test results show that MoS₂/RGO has a smaller Tafel slope(32 mV/dec)，lower overpotential (η₁₀=145 mV/dec) and good chemical stability，when the mass ratio of MoS₂/RGO is 1∶2.

Preparation and Properties of Graphene /HDPE Composites [J]. Journal of Shenyang University of Chemical Technology, 2023, 37(3): 233-238.