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

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.