RGO/MnO2/polypyrrole ternary film electrode for supercapacitor

294Electrode with high capacitance and good flexibility is prepared by a filtration-directed self-assembly technique. The [RGO/MNO2 + PPy]10 ternary film electrode with a mass ratio of RGO/MNO2/PPy = 2:1:2 delivers the highest specific capacitance of 682 F g−1 at a scan rate of 5 mV s−1 and good cycling stability with about 86% retention of its original capacitance after 1000 consecutive cycles.