Control of the morphologies of molybdenum disulfide for hydrogen evolution reaction

• DOI: 10.1002/er.7896
• Publication Date: 2022-03-26T03:05:37Z
• Authors: Tuan van Nguyen; Mahider Tekalgne; Thang Phan Nguyen; Wenmeng Wang; Sung Hyun Hong; Jin Hyuk Cho; Quyet van Le; Ho Won Jang; Sang Hyun Ahn; Soo Young Kim
• Keywords: Molybdenum disulfide; Overpotential; Specific surface area; Nanoflower; BET theory

In this study, different morphologies of molybdenum disulfide (MoS2), including MoS2 nanoparticle (NP), nanoflower (NF), nanosphere (NS), nanohollow (NH), and MoS2/MoO2 composite, are successfully synthesized via a facile-route hydrothermal process employing solutions. The structure chemical bonding the investigated X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), photoelectron spectroscopy (XPS). Thereafter, materials applied to hydrogen evolution reaction (HER) three-electrode system in standard acidic medium (0.5 M H2SO4). NH exhibits higher performance: an overpotential −230 mV at −10 mAcm−2, Tafel slope 64 mVdec−1, high double-layer capacitance (Cdl) 11.98 mFcm−2 larger BET surface area (22.59 m2/g), as well super stability after tests, representing best catalytic behavior among materials. results indicate that electrocatalytic efficiencies depend on their which is highly related catalysts. avail novel avenue for synthesizing various MoS2, new morphology (MoS2 NH). It can be promising material energy-storage applications.