Tin disulphideitrogen-doped reduced graphene oxide/polyaniline ternary nanocomposites with ultra-high capacitance properties for high rate performance supercapacitor

摘要

In this work, tin disulfideitrogen-doped reduced graphene oxide/polyaniline ternary composites are synthesized via in situ polymerization of aniline monomers on the surface of tin disulfideitrogen-doped reduced graphene oxide nanosheets binary composites with different loading of the conducting polymers. The tin disulfideitrogen-doped reduced graphene oxide/polyaniline ternary composites electrode shows much higher specific capacitance, specific energy and specific power values than those of pure polyaniline and tin disulfideitrogen-doped reduced graphene oxide binary composites. The highest specific capacitance, specific energy and specific power values of 1021.67 F g ~(?1) , 69.53 W h kg ~(?1) and 575.46 W kg ~(?1) are observed for 60% polyaniline deposited onto tin disulfideitrogen-doped reduced graphene oxide composites at a current density of 1 A g ~(?1) . The above composites also show superior cyclic stability and 78% of the specific capacitance can be maintained after 5000 galvanostatic charge–discharge cycles. The good charge-storage properties of tin disulfideitrogen-doped reduced graphene oxide/polyaniline ternary composites is ascribed to the organic–inorganic synergistic effect. This study paves the way to consider tin disulfideitrogen-doped reduced graphene oxide/polyaniline ternary composites as excellent electrode materials for energy storage applications.