Synthesis and Electrochemical Performance of Molybdenum Disulfide-Reduced Graphene Oxide-Polyaniline Ternary Composites for Supercapacitors

Abstract

Molybdenum disulfide/reduced graphene oxide/polyaniline ternary composites (MoS₂/rGO/PANI) were designed and synthesized by a facile two-step approach including hydrothermal and in situ polymerization process. The MoS₂/rGO/PANI composites presented an interconnected 3D network architecture, in which PANI uniformly coated the outer surface of the MoS₂/rGO binary composite. The MoS₂/rGO/PANI composites with a weight percent of 80% (MGP-80) exhibits the best specific capacitance (570 F g^-1 at 1 A g^-1) and cycling stabilities (78.6% retained capacitance after 500 cycles at 1 A g^-1). The excellent electrochemical capacitive performance is attributed to its 3D network structure and the synergistic effects among the three components that make the composites obtain both pseudocapacitance and double-layer capacitance.