MoS 2 Formed on Mesoporous Graphene as a Highly Active Catalyst for Hydrogen Evolution

Abstract A highly active and stable electrocatalyst for hydrogen evolution is developed based on the in situ formation of MoS 2 nanoparticles on mesoporous graphene foams (MoS 2 /MGF). Taking advantage of its high specific surface area and its interconnected conductive graphene skeleton, MGF provides a favorable microenvironment for the growth of highly dispersed MoS 2 nanoparticles while allowing rapid charge transfer kinetics. The MoS 2 /MGF nanocomposites exhibit an excellent electrocatalytic activity for the hydrogen evolution reaction with a low overpotential and substantial apparent current densities. Such enhanced catalytic activity stems from the abundance of catalytic edge sites, the increase of…