Nanostructured hybrids of transition metal dichalcogenides have received substantial attention as an attractive material for a diverse energy storage and conservation applications. Herein, we present a facile, scalable and environment-friendly preparation process for the production of SnS2/graphene nanostructured hybrids. This strategy encompasses solvent less mixing of tin salt, surfeit yet non-toxic abundant elemental sulfur and graphite oxide under continuous ball milling and moderate thermo-annealing. The resulting nanohybrids were deeply investigated by means of several techniques. XRD, HRTEM, SEM, Raman and BET have been applied to obtain information on the morphology and the structure of the nanohybrid as well as on the vibrational and spectroscopic properties. Electrochemical studies were performed to explore the supercapacitive nature of SnS2/graphene nanohybrids with varying graphene content. The SnS2/graphene supercapacitor electrodes with optimum graphene content delivered excellent cyclic voltammetry performances, superior gravimetric specific capacitances, and high power densities. The as obtained capacitance gives value of 643 F/g at a current density of 0.06 A/g, which is significantly higher than those previously reported for SnS2 nanohybrids. The long-term cyclic stability was also tested to demonstrate the durability of the SnS2/graphene based supercapacitor, with high rate preservation and galvanostatic charge/discharge reversibility. These electrochemical findings entitle that SnS2/graphene nanohybrid is a promising electrode materials in supercapacitor and other energy storage applications.

Scalable solid-state synthesis of SnS2/graphene nanostructured hybrids for high performance supercapacitor applications

2019 Fall National Meeting

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