Publication

Abstract : Solid polymer electrolyte [SPE] blend incorporating Poly (ethylene-oxide) and poly (vinylidene fluoride-co-hexafluoropropylene) [PEO/PVDF-HFP] and different wt.% of potassium trifluoromethanesulfonate (KCF3SO3) was composed. The SPE blend containing 20% of KCF3SO3 presents highest ionic conductivity of 4.28×10-6 Scm-1, which is observed to increase due to addition of titanium oxide nanoparticles (TiO2) (10nm size). The conductivity increases to 7.95×10-5 Scm-1, for 5 wt.% of TiO2. The decline in relaxation time τ of ions from dielectric studies reveal an increment in disordered phase in the matrix. The observed decrease in glass transition and melting temperatures [Tg and Tm] in Differential Scanning Calorimeter (DSC) analysis also supports the observed increment in amorphous phase due to incorporation of nano particles.