Abstract
An efficient electrocatalyst for hydrogen evolution has been developed based on liquid exfoliation of bulk MoS2 via a direct dispersion and ultrasonication method. Transmission electron microscopy and atomic force microscopy measurements show that the exfoliated MoS2 consists of two-dimensional nanosheets. The exfoliated MoS2 nanosheets modified glass carbon electrode (E-MoS2/GCE) with various loadings is fabricated via a drop-casting method. The electrocatalytic activity of E-MoS2/GCE toward hydrogen evolution reaction is examined using linear sweep voltammetry. It is shown that the E-MoS2/GCE with an electrode loading of 48μgcm−2 exhibits a high catalytic activity for hydrogen evolution with a low overpotential (−0.12V) and a high current density (1.26mAcm−2, at η=150mV).
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