▎ 摘　　要

In this paper, the composite of graphene and NiFe-layered double hydroxides (GNS/NiFe-LDHs) has been fabricated by the hydrothermal synthesis method. Structure and morphology characterization showed that the GNS/NiFe-LDHs composite belonged to irregular platelet-like system with layered structure. Electrochemical tests demonstrated that the introduction of GNS improved the electrochemical performance of NiFe-LDHs, especially, the specific capacitance. GNS/NiFe-LDHs composite exhibited the best capacitance performance with specific capacitance of 1448 F/g at the current density of 0.5 A/g. Its cycle stability was also improved, and the specific capacitance retention rate was 66.3%, after 500 cycle test at a current density of 2 A/g.