Facile synthesis of polypyrrole nanowires for high-performance supercapacitor electrode materials

Polypyrrole nanowires are facile synthesized under a mild condition with FeCl 3 as an oxidant. Polypyrrole nanowires with the width of 120 nm form many nanogaps or pores due to the intertwined nanostructures . More importantly, PPy nanowires were further applied for supercapacitor electrode materials. After electrochemical testing, it was observed that the PPy nanowire based electrode showed a large specific capacitance (420 F g −1 , 1.5 A g −1 ) and good rate capability (272 F g −1 , 18.0 A g −1 ), which is larger than that of most of published results. The as-prepared electrode can work well even after 8000 cycles at 1.5 A g −1 .