title: Morphological Engineering of CVD-Grown Transition Metal Dichalcogenides for Efficient Electrochemical Hydrogen Evolution.
abstract: 2D layered transition metal dichalcogenides (TMDCs) have emerged as new possibilites beyond conventional particulate catalysts in facilitating efficient electrochemical hydrogen evolution. This is mainly mediated by the ultrahigh surface-to-volume ratio and the effective coupling of all active sites with supporting electrodes. Especially, the facile chemical vapor deposition (CVD) method has enabled morphological engineering of monolayer TMDC catalysts toward development of abundant active edge sites within the 2D plane. Here, two pathways to achieve such purpose are highlighted, either by non-equilibrium growth of MoS2 dendrites or throughout high-density nucleation of MoS2 nanoflakes directly on the electrode materials. Furthermore, future research directions have also been proposed and discussed to further enhance the efficiency of such unique catalysts.
authors: Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, P. R. China.
authors: Qingqing
authors: Q
authors: Ji
authors: Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, P. R. China.|Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China.
authors: Yu
authors: Y
authors: Zhang
authors: Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, P. R. China.|Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China.
authors: Jianping
authors: J
authors: Shi
authors: Cambridge Graphene Center, University of Cambridge, 9 JJ Thomson Avenue, Cambridge, CB3 0FA, UK.
authors: Jingyu
authors: J
authors: Sun
authors: Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, P. R. China.|Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China.
authors: Yanfeng
authors: Y
authors: Zhang
authors: Center for Nanochemistry (CNC), Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, P. R. China.
authors: Zhongfan
authors: Z
authors: Liu
keywords: active edge sites; chemical vapor deposition; electrochemical hydrogen evolution; monolayers; transition metal dichalcogenides