Abstract
Using in situ chemical polymerization method, polypyrrole/tungsten disulphide (PPy/WS2) composites were synthesized in various compositions viz. 10, 20, 30, and 40 wt% of WS2 in polypyrrole. Composites were structurally and morphologically characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectra, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy techniques. AC response studies of the composites at room temperature were carried out in the frequency range 50 Hz–1 MHz. When compared with pristine PPy, the composites have exhibited enhanced conductivity and the same has been reflected in the complex plane impedance plots. This indicates that the conduction mechanism is due to the hopping of charge carriers. The loss tangent curves of the composites have been explained using Rezlescu model.
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