▎ 摘　　要

Developing new type of electrolyzed water catalysts is very important. In this work , nickel phosphide nanocrystals supported on N, S co-doped reduced graphene oxide (Ni2P/NSRGO) as a high activity catalyst was synthesized by the simple hydrothermal process. The graphene can anchor nickel phosphide and improve catalytic performance. The results of electrochemical test showed that the Ni2P/NSRGO composite electrocatalyst showed better hydrogen evolution perfkifmance than Ni2P/NRGO and Ni2P/RGO catalysts, indicating the addition of N and S has a positive effect on the improvement of hydrogen evolution performance. The Ni2P/NSRGO nanocrystals catalyst shows excellent performance with a small Tafel slope of 35 mV/dec , longterm durability and a low overpotential (eta(10 )= 140 mV) in 0. 5 mol/L H2SO4 the hydrogen evolution reaction(HER) .