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One-step hydrothermal synthesis of GQDs-MoS2 nanocomposite with enhanced supercapacitive performance

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Abstract

In recent years, graphene quantum dots with unique physiochemical properties have received considerable research attention in many fields. In this report, as a novel approach toward improving the capacitance value of MoS2 electrode, GQDs-MoS2 nanocomposite thin film was synthesized through one-step hydrothermal process. The microstructure and surface morphology of both MoS2 and GQDs-MoS2 nanocomposite thin films were characterized by X-ray diffraction, Raman spectroscopy, field emission-scanning electron microscopy, and Fourier transform infrared spectroscopy. The electrochemical performances of MoS2 and GQDs-MoS2 nanocomposite thin films was thoroughly compared via Autolab potentiostat–galvanostat with the three-electrode system. The results indicated that GQDs-MoS2 nanocomposite thin film demonstrates enhanced specific capacitance of 380 F g−1 under the current density of 0.6 A g−1. Moreover, the MoS2-GQDs thin film exhibited the highest energy density of 38.47 Wh kg−1 at the Current density of 0.6 A g−1.

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  1. Department of Nanotechnology and Advanced Materials, Materials and Energy Research Centre, P.O. Box 31787-316, Karaj, Iran

    Sara Moghimian & Parvaneh Sangpour

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  1. Sara Moghimian
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  2. Parvaneh Sangpour
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Correspondence to Parvaneh Sangpour.

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Moghimian, S., Sangpour, P. One-step hydrothermal synthesis of GQDs-MoS2 nanocomposite with enhanced supercapacitive performance. J Appl Electrochem 50, 71–79 (2020). https://doi.org/10.1007/s10800-019-01366-3

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