  A free standing transparent film of solid state polymer electrolyte based on
PEO/PAN + NaPF6 with different compositions of nano sized TiO2 in weight
percent (x = 0, 1, 2, 5, 10, 15, 20 ) is synthesized by using standard solution
cast technique. The homogeneous surface of above polymer composition is
examined by FESEM. The microscopic interaction among polymer, salt and
nanoceramic filler has been analyzed by Fourier Transformed Infra-Red (FTIR)
spectroscopy. The reduction of ion pair formation in polymeric separator is
clearly observed on addition of nanofiller in the polymer salt complex film.
Electrical conductivity has been recorded of the prepared polymeric separator
which is of the order of ~10-3 Scm-1 after addition of nanofiller (15% wt/wt)
which support the FTIR results. Electrochemical potential window has been
observed of the order of ~6V by the cyclic voltammetry results. The observed
data of the prepared separator are at par with the desirable value for device
applications.
