摘要
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[Mo3S(13)]^2- nanoclusters was used to prepare the N,S,O-doped carbon encapsulating Co9S8 and MoS2(Co9S8/MoS2@NSOC)nanocomposite by one-step pyrolysis.The Co9S8/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 mA cm^-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.
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（Co9S8/MoS2@NSOC） nanocomposite by one-step pyrolysis. The Co9S8/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 mA cm-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.
基金
supported by the National Science Fund for Distinguished Young Scholars (No. 21825106)
National Natural Science Foundation of China (No. 21671175)
Program for Science & Technology Innovation Talents in Universities of Henan Province (No. 164100510005)
Key Scientific Research Project Plan in Colleges and Universities of Henan Province (No. 16A150045)
Program for Innovative Research Team (in Science and Technology) in Universities of Henan Province (No. 19IRTSTHN022).
