Porous Molybdenum‐Based Hybrid Catalysts for Highly Efficient Hydrogen Evolution

Abstract

Abstract We have synthesized a porous Mo‐based composite obtained from a polyoxometalate‐based metal–organic framework and graphene oxide (POMOFs/GO) using a simple one‐pot method. The MoO 2 @PC‐RGO hybrid material derived from the POMOFs/GO composite is prepared at a relatively low carbonization temperature, which presents a superior activity for the hydrogen‐evolution reaction (HER) in acidic media owing to the synergistic effects among highly dispersive MoO 2 particles, phosphorus‐doped porous carbon, and RGO substrates. MoO 2 @PC‐RGO exhibits a very positive onset potential close to that of 20 % Pt/C, low Tafel slope of 41 mV dec −1 , high exchange current density of 4.8×10 −4 A cm −2 , and remarkable long‐term cycle stability. It is one of the best high‐performance catalysts among the reported nonprecious metal catalysts for HER to date.