Abstract: Polyaniline (PANI) was a typical conducting polymer while graphite nanosheets (NanoG) are materials of high specific surface. Composites of PANI with NanoG were prepared via an in situ polymerization of aniline (ANI) in the presence of NanoG. Results showed that NanoG had a thickness ranging of 30~90 nm and diameter ranging of 1~20 μm, and diameter to thickness ratio was 300~500. The composites exhibited a high electrical conductivity of 5.16 S/cm when the NanoG content was 2.30 vol %, and the percolation threshold of the composites was as low as 2.30 vol %. This great improvement of conductivity could be attributed to the high aspect ratio of NanoG.

Key words: polyaniline, graphite nanosheets, specific surface, electrically property