▎ 摘　　要

The reduction of active sites due to reunion and slow electron transfer rates and low electronegativity greatly reduced the catalytic performance of many two-dimensional materials. In this paper, we synthesized composites for partially reducing graphene oxide and molybdenum disulfide (MoS2@prGO) by one-step hydrothermal method. With the addition of triethanolamine, MoS2 is highly dispersed on the prGO carrier and converted into the 1T phase MoS2 (50.4%). Meanwhile, it helps to increase the electron transfer rate of the MoS2@prGO composites. MoS2@prGO composites presents a high electron cloud density due to the existence of N atoms and prGO, which promotes the occurrence of hydrogen ion conversion hydrogen reaction and decreases the electrocatalytic hydrogen evolution overpotential. MoS2@prGO composites exhibits an overpotential of 263 mV at 10 mA/cm(2) and a small Tafel slope of 60 mV/dec. This work is devoted to offer a new prospect and direction for the improvement of electrochemical HER performance. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.