Carbon Coated MoO3 Nanowires/Graphene oxide Ternary Nanocomposite for High-Performance Supercapacitors

Abstract A ternary nanocomposite of molybdenum trioxide (α-MoO 3 ) nanowires coated with a thin layer of carbon, which is intertwined with graphene oxide is synthesized by hydrothermal and ultrasonication route. It is found that high conductivity of carbon coated MoO 3 nanowires is further increased by introducing the graphene sheets. The ternary nanocomposite (rGO/MoO 3 @C) exhibits high specific capacitance, excellent cyclic stability compared to the carbon coated MoO 3 (MoO 3 @C) and virginal MoO 3 nanowires due to the synergistic effect of carbon layer and graphene. The electrochemical impedance measurements show that rGO/MoO 3 @C nanocomposite have lower charge transfer resistance as compared to MoO 3 @C and MoO 3 nanowires electrodes. Two probe electrical conductivity ( I–V ) measurements confirm the enhanced conductivity of rGO/MoO 3 @C nanocomposite relative to MoO 3 @C and bare MoO 3 nanowires. The electrical and electrochemical measurements indicate that the rGO/MoO 3 @C nanocomposite is promising candidate for energy storage applications.