Electrocatalytic hydrogen evolution of palladium nanoparticle electrodeposited on nanographene coated macroporous electrically conductive network was studied in KOH electrolyte. The surface nanographene on nickel nanoparticles can increase the electron conductivity and protect the metal particles, as well as improve the electrode stability in the electrolyte. After the palladium nanoparticle electrodeposited on nanographene coated three-dimensional network, the enhancing electrocatalytic hydrogen evolution can be attributed to better surface electrochemical properties, including of the low charge transfer resistances, and improving H+ ion adsorption/desorption and reaction rate. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.