Authors: M Deka A K Nath A Kumar
Publish Date: 2010/11/09
Volume: 84, Issue: 10, Pages: 1299-1305
Abstract
In the present work dispersion of dedoped polyaniline nanofibers into PEOLiClO4 blended with PVdFHFP has been discussed Polyaniline nanofibres have been synthesized by a gentle interfacial polymerization route The nanofibers are dedoped with base NaOH and films of PEOPVdFHFPLiClO4dedoped polyaniline nanofibres are prepared by solution casting method with varying concentration of dedoped insulating nanofibers from 5 wt to 25 wt The synthesized polymer electrolyte films have been characterized by ac impedance analysis XRD and SEM The ionic conductivity of PEOPVdFHFPLiClO4 electrolyte system increases with increase in concentration of dedoped polyaniline nanofibers The high aspect ratio 50 nanofibres prevent PEOPVdFHFPLiClO4 electrolyte matrix from reorganization resulting in increase in amorphicity that leads to enhancement in ionic conductivity However the XRD results show that at higher concentration 15 wt the nanofibres get phase separated out from the polymer electrolyte phase and start forming insulating clusters which impedes the ion motion SEM studies confirm the formation of domain like structure of nanofibres at higher concentration which act as physical barrier for the conduction of Li+ ions
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