▎ 摘　　要

This study describes a simple and effective ionic liquid (IL)-assisted mechanochemical route to prepare a set of nanostructured graphene nanosheet/polypyrrole (GNS/PPy) composites of with different PPy loading. The functionalized IL 1-butyl-3-methylimidazolium tetrachloroferrate (Bmim[FeCl4]) used here acts as not only the dispersant of GNS but also the catalyst and dopant in the synthesis of PPy. FTIR illustrates the presence of PPy in the composites. A comparative study performed on composites and pure PPy has led to two main conclusions: on one hand, the microstructure of the GNS/PPy composites is dependent on the loading of PPy. On the other hand. GNS/PPy composites show improved conductivity and thermal stability compared with pure PPy. (C) 2011 Elsevier B.V. All rights reserved.