▎ 摘　　要

The nano-polypyrrole/reduced graphene oxide composites are successfully prepared through double emulsion method (water in oil in water system). Graphene oxide is synthesized by the modified Hummers method, and reduced graphene oxide is obtained via thermal reduction method. Effects of the conditions during polymerization on the morphology of the polypyrrole nanospheres have been investigated. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and electrochemical workstation (CHI 660E) are utilized to characterize the composites. The synthesized composites have the specific capacitance of 855 F/g at a scan rate of 1 mV/s and the specific capacitance retention can still maintain 88% after 800 cycles, which indicates good electrochemical performance and good cyclability.