Facile Synthesis of Tin Oxide (SnO2)/Reduced Graphene Oxide (rGO) Nanocomposite For Energy Storage Application

Abstract

This study presents the synthesis and in-depth evaluation of a novel Tin(IV) oxide/reduced graphene oxide (SnO2/rGO) nanocomposite developed as an electrode material for advanced electrochemical supercapacitors. Utilizing a scalable synthesis method with optimized parameters, the resulting nanocomposite was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM), revealing its well-defined morphology, crystal structure, and composition. Comprehensive electrochemical assessments, including galvanostatic charge-discharge (GCD), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV), demonstrated that SnO2/rGO exhibits superior performance metrics compared to pure SnO2. Notably, at a current density of 1 A g−1, the SnO2/rGO nanocomposite achieved a specific capacitance of 140 F g−1, surpassing the 133 F g−1 of pure SnO2. These findings highlight the SnO2/rGO nanocomposite's potential to significantly enhance energy storage capabilities, making it a promising candidate for applications in electric vehicles, portable electronics, and sustainable energy systems.

Keywords

• SnO2/rGO
• Nanocomposite
• Supercapacitors
• Energy storage
• Galvano static charge-discharge