Flower like-novel nanocomposite of Mg(Ti_0.99Sn_0.01)O₃ decorated on reduced graphene oxide (rGO) with high capacitive behavior as supercapacitor electrodes

Abstract

In this study, ceramic materials of Mg(Ti0.99Sn0.01)O3 were synthesized and decorated on reduced graphene oxide, forming a nanocomposite of rGO/Mg(Ti0.99Sn0.01)O3 (rGO/MTS001). The successful synthesis results were confirmed by XRD, UV-Vis analysis, FT-IR, and SEM-EDS. The MTS001 has a flower-like morphology from SEM analysis, and the nanocomposites of rGO/MTS001 showed MTS001 particles decorated on rGO's surface. The electrochemical performance of rGO/MTS001 compared and MTS001 was investigated by determining the specific capacitance obtained in 1 M H2SO4 solution by cyclic voltammetry (CV), followed by galvanostatic charge-discharge (GCD) analysis using a three-electrode setup. The rGO/MTS001 achieved a specific capacitance of 361.97 F g‒1, compared to MTS001 (194.90 F g‒1). The capacitance retention of rGO/MTS001 nanocomposite also depicted excellent cyclic stability of 95.72% after 5000 cycles at a current density of 0.1 A g‒1. The result showed that the nanocomposite of ceramics with graphene materials has a potential for high-performance supercapacitor electrodes.