▎ 摘　　要

The electrolysis of water to produce clean, non-byproduct hydrogen energy is considered to be the most effective method. Therefore, it is of far-reaching significance that hydrogen evolution electrocatalysts with lower development costs and good performance. In this essay, the different effects of Electrocatalytic Hydrogen Evolution of FeNixS2 - RGO Electrocatalysts are studied with different nickel-doped content added. The results demonstrate that the Ni element incorporated with a molar fraction of 10% (FeNi0.10S2-RGO) has a lower Tafel slope (71.96 mV dec(-1)) and good electrochemical kinetics. However, the Ni element with a mole fraction of 20% (FeNi0.20S2-RGO) has a low overpotential. Compared to FeNi0.10S2-RGO, the overpotential of FeNi0.20S2-RGO is reduced by 42 mV at the current density of 10 mA cm(-2) in 0.5 M H2SO4. Moreover, Fe and Ni are earth-abundant in content, inexpensive and suitable for industrial production. (C) 2018 Elsevier B.V. All rights reserved.