IBS Publications Repository: Edge-exposed MoS2 nano-assembled structures as efficient electrocatalysts for hydrogen evolution reaction

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Title: Edge-exposed MoS2 nano-assembled structures as efficient electrocatalysts for hydrogen evolution reaction

Author(s): Dong Young Chung; Park S.-K.; Chung Y.-H.; Seung-Ho Yu; Lim D.-H.; Jung N.; Ham H.C.; Park H.-Y.; Piao Y.; Yoo S.J.; Yung Eun Sung

Subject: Edge sites, ; Electrocatalytic, ; Exafs analysis, ; Hydrogen evolution reaction activities, ; Hydrogen evolution reactions, ; Long term stability, ; Electrocatalysts, ; Hydrogen, ; Spheres, ; Molybdenum compounds

Abstract: Edge-exposed MoS2 nano-assembled structures are designed for high hydrogen evolution reaction activity and long term stability. The number of sulfur edge sites of nano-assembled spheres and sheets is confirmed by Raman spectroscopy and EXAFS analysis. By controlling the MoS2 morphology with the formation of nano-assembled spheres with the assembly of small-size fragments of MoS2, the resulting assembled spheres have high electrocatalytic HER activity and high thermodynamic stability. © 2014 The Royal Society of Chemistry.