Hydrothermal synthesis of polyaniline nanospheres coupled with graphene oxide for enhanced specific capacitance performances

Polyaniline is one of the most common electrode materials for supercapacitors. The morphology polyaniline directly affects properties polyaniline. In this paper, a new method preparing hollow nanospheres described. Polyaniline-S with solid and structures are successfully synthesized by hydrothermal method, through varying amounts catalyst oxidant. prepared have uniform particle size, smooth surface, wall thickness. structure provides rapid permeability to material, facilitating transfer transport charges ions in electrolyte, it can also act as an ion storage tank increase accumulation inside. specific capacitance polyaniline-S high at 235 F g -1 0.5 A . To reduce aggregation improve electrochemical activity, polyaniline-S, graphene oxide composited using interfacial electrostatic interaction. content has significant influence on performance composites. polyaniline-S/ composite 10% loading amount reaches 535 , nearly 128% compared representing polyaniline-S. retention rate 93.6% after 10,000 cycles.