Abstract
Abstract In this study, a hybrid graphene/manganese dioxide/poly(2,2’-dithiodianiline) (graphene/MnO2/PDTDA) composite material was in-situ prepared by chemical oxidative polymerization of PDTDA in graphene/MnO2 and applied as supercapacitor electrode materials in alkaline electrolyte. The morphology, structure, and particularly the electrochemical performances of such graphene/MnO2/PDTDA composite was characterized by XRD, SEM, FTIR, and electrochemical tests. The results showed that the graphene/MnO2/PDTDA ternary composite possessed the advantages of both double-layer capacitance and Faraday’s pseudocapacitance behaviours, thus leading to the highest specific capacitance of 96.35 F·g−1 as compared to the binary MnO2/PDTDA electrode material (35.26 F·g−1) at a current density of 10 mA·cm−1, implying potential candidate in future supercapacitor electrode materials.
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