Electrocatalytic hydrogen evolution using the MS2@MoS2/rGO (M = Fe or Ni) hybrid catalyst

Abstract

We established a three-tiered cake-like hybrid (MS₂@MoS₂/rGO, M = Fe or Ni) with the MS₂ nanoparticles distributed over the platform of MoS₂ and graphene (MoS₂/rGO), which exhibits superior HER electrocatalytic activity as well as excellent electrochemical durability. The enhanced electrocatalytic activity benefits from the unique synergistic effects of graphene sheets enhancing the conductivity of the hybrid, MS₂ (M = Fe or Ni) nanoparticles and MoS₂ nanosheets providing abundant electrocatalytically active sites. Meanwhile, the mechanical stability is promoted by the meticulously-built cake-like structure.