Facile synthesis and enhanced electrochemical properties of reduced graphene oxide/MoS2/polyaniline ternary composites

Abstract

In this study, ternary composites of reduced graphene oxide/molybdenum disulfide/polyaniline (rGEO/MoS₂/PANI) were prepared via a two-stage facile synthesis including a hydrothermal reaction and polymerization at room temperature which makes the materials much easier for industrialization. The doping of reduced graphene oxide (rGEO) decreases the aggregation of MoS₂ and enhances the electronic conductivities of MoS₂, thus exhibiting better capacitance properties (531 F g⁻¹ at 1 A g⁻¹) and cycling stabilities (86.7% retained capacitance over 3000 cycles at 1 A g⁻¹) of ternary composites than a uniform material (MoS₂) or binary materials (MoS₂/PANI). The combined effects between the three components make the composites obtain both pseudocapacitance and double-layer capacitance, which can be used to explain the improvement of electrochemical performances.