Glucose-Reduced MnO₂/Graphene Composites Electrode for Supercapacitor

Abstract

Green composites of Glucose-reduced graphene oxide (GrGO) and manganese (IV) oxide (MnO 2 ) were prepared in a typical chemical synthesis route assisted with ultrasonic irradiation. Conductivity studies conducted via 2-point probe method shows GrGO/MnO 2 (4:1) possessed electrical conductivity of 30.29 S cm -1 with energy band gap of 8.47×10 -1 eV. The increase of D/G intensity ratio of GrGO with increase MnO 2 loading indicates more disorder carbon or defects are introduced from the reaction of carbon with MnO 4 - .