[en] Reduced graphene oxide-tin oxide (SnO₂-rGO) nanocomposite was prepared by a simple hydrothermal method and used as electrode material for supercapacitor application. The electrode material was characterized by field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD) to understand the morphology and structure. The electrochemical performance was studied by cyclic voltammetry (CV), galvanometric charge-discharge (CD) and electrochemical impedance spectroscopy (EIS) using 1 M Na₂SO₄ electrolyte. The SnO₂-rGO nanocomposite exhibits high specific capacitance 177.87 F g^-1 at 5 mV s^-1 scan rate and shows excellent rate capability. The energy density of the nanocomposite could reach ∼174 Wh kg^-1 at a power density of ∼ 5 kW kg^-1. These electrochemical results make SnO₂-rGO nanocomposite as promising electrode for high performance supercapacitor. (author)