Synthesis, Electrical Conductivity, and Dielectric Behavior of PolyanilineV2O5 Composites

Abstract EN

Conducting polymer composites of polyaniline/vanadium pentaoxide PANI/V2O5 (with different initial weight percentage of V2O5) has been synthesized by in situ polymerization method.

DC conductivity of compressed pellets has been analyzed in the temperature range 300–550 K and was found to increase with V2O5 doping.

This increase in conductivity is mainly due to band conduction.

It has also been observed that the dielectric constant and dielectric loss increase with the level of doping of V2O5 but remain independent of the frequency (50 KHz–1 MHz).

X-ray diffraction pattern shows some order of crystallinity of composites due to interaction of polyaniline with V2O5.

UV-visible spectroscopy shows an increase in the optical band gap with doping.