Fabrication of rGO-modified ternary metal chalcogenide hybrid nanocomposite(rGO/Cu2MnSnS4) for high-performance supercapacitors

Abstract

Efficient supercapacitor electrodes play a crucial role in addressing energy-related challenges and contributing to solutions for the global energy crisis. Recently, Metal chalcogenide/reduced graphene oxide (rGO) composites have garnered considerable attention due to their potential as electrode materials for supercapacitor applications. This study investigates the synergistic catalytic performance achieved by integrating ternary metal-based chalcogenides (Cu2MnSnS4) with 2D carbonaceous materials, highlighting their enhanced conductivity and catalytic activity for applications in energy conversion and environmental remediation. The current study involves the synthesis of a nanocomposite comprising rGO and copper manganese tin sulphide (Cu2MnSnS4), intended for use as an electrode material in energy storage devices. The structural characterization of the rGO/Cu2MnSnS4 nanocomposite was verified through X-ray diffraction, and the morphological analysis was conducted using scanning electron microscopy (SEM). The hybrid Cu2MnSnS4/rGO electrodes have demonstrated remarkable electrochemical characteristics, notably surpassing the performance of pure Cu2MnSnS4 in an alkaline electrolyte. Specifically, the maximum specific capacitance of Cu2MnSnS4/rGO reaches 1539 F g−1 at a scan rate of 10 mV s−1, whereas pure Cu2MnSnS4/rGO achieves a maximum specific capacitance of 948 F g−1 at the same scan rate. The findings from the electrochemical performance evaluation of the electrode material suggest that incorporating into rGO into Cu2MnSnS4 can significantly boost the supercapacitor performance of the Cu2MnSnS4 electrodes. This innovative combination has notably enhanced the overall electrochemical properties of the electrode materials, establishing it as a promising candidate for use in supercapacitor devices.