doi:10.1016/j.ijhydene.2016.05.285engSenthil Kumar, S. M.Selvakumar, K.Thangamuthu, R.Karthigai Selvi, A.Ravichandran, S.Sozhan, G.Rajasekar, K.Navascues, N.Irusta, S.Hydrothermal assisted morphology designed MoS2 material as alternative cathode catalyst for PEM electrolyser applicationART-2016-96682In this work, we developed a simple and cost-effective hydrothermal route to regulate the formation of molybdenum disulfide (MoS2) in different morphologies, like, nano-sheet, nano-capsule and nano-flake structure by controlling the reaction temperature and sulphur precursor employed. Such a fine tuning of different morphologies yields a leverage to obtain novel shapes with high surface area to employ them as suitable candidates for hydrogen evolution catalysts. Moreover, we report here the first time observation of MoS2 nano-capsule formation via environmentally benign hydrothermal route and characterized them by X-ray diffraction (XRD), nitrogen adsorption and desorption by Brunaer–Emmett–Teller (BET) method, scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and X-ray photo-electron spectroscopy (XPS) techniques. MoS2 nano-capsules exhibits superior activity towards hydrogen evolution reaction (HER) with a low over-potential of 120 mV (RHE), accompanied by large exchange current density and excellent stability in 0.5 M H2SO4 solution. MoS2 nano-capsule catalyst was coated on solid proton conducting membrane (Nafion) and IrO2 as anode catalyst. The performance of the catalyst was evaluated in MEA mode for 200 h at 2 V without any degradation of electrocatalytic activity.2016http://zaguan.unizar.es/record/7099910.1016/j.ijhydene.2016.05.285http://zaguan.unizar.es/record/70999oai:zaguan.unizar.es:70999International Journal of Hydrogen Energy 41, 31 (2016), 13331-13340by-nc-ndhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccess