en Research Paper Research Paper <span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><span style="font-size:14.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">In this research, the morphology of the Ni-W coating was modified by adding graphene oxide (GO) nanosheets in such a way that a foam-like structure with high porosity and holes in the form of intertwined tunnels was obtained. Different amounts of GO nanosheets were added to the plating bath and the resulting coating was examined. In order to estimate the electrochemically active surface area, the cyclic voltammetry (CV) test was used. Moreover, the linear polarization test (LSV) and chronoamperometry in 1 M NaOH were conducted to investigate the electrocatalytic activity for the hydrogen evolution reaction (HER). It was found that by adding 0.4 g/L GO to the electroplating bath, the electrocatalytic properties are doubled and the active surface of the electrode is significantly increased.</span></span></span></span></span></span><br> &nbsp; Alkaline water splitting,Composite coating,Hydrogen Evolution Reaction,Electrochemically active surface area,Renewable energy 129 136 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-71-6&slc_lang=en&sid=1 Mohammad Derakhshani m.derakhshani1988@gmail.com 1800319475328460019671 1800319475328460019671 No School of Metallurgy and Materials Engineering, Iran University of Science & Technology Saeed rastegari rastegari@iust.ac.ir 1800319475328460019672 1800319475328460019672 Yes School of Metallurgy and Materials Engineering, Iran University of Science & Technology Ali Ghaffarinejad Ghaffarinejad@iust.ac.ir 1800319475328460019673 1800319475328460019673 No School of Metallurgy and Materials Engineering, Iran University of Science & Technology