MOF-derived Co9S8/MoS2 embedded in tri-doped carbon hybrids for efficient electrocatalytic hydrogen

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Metal-organic framework (MOF) derived hybrid materials have been developed as an efficient non-noblemetal electrocatalysts for clean energy conversion systems.In this work,a Co-based MOF containing nitrogen and oxygen heteroatoms (Co-NOMOF) mixed with the thiomolybdate [Mo3S13]2-nanoclusters was used to prepare the N,S,O-doped carbon encapsulating Co9S8 and MoS2 (C09S8/MoS2@NSOC) nanocomposite by one-step pyrolysis.The C09Ss/MoS2@NSOC nanocomposite exhibited remarkable catalytic performance for hydrogen evolution reaction (HER) with overpotential of 194 and 233 mV in 1 M KOH and 0.5 M H2SO4 solution under 10 mAcm-2,respectively,which was ascribed to the multiheteroatom-doped hierarchical porous carbon matrix and the synergistic effect of intrinsic activity of Co9S8 and MoS2.This work provides new opportunity for developing highly efficient non-precious metal electrochemical catalysts.
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