Polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP)-based composite polymer electrolyte containing LiPF3(CF3CF2)3

This paper describes the preparation and characterization of lithium fluoroalkylphosphate-containing composite polymer electrolyte based on a polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP)matrix. A mixture of ethylene carbonate and diethyl carbonate was used as a plasticizing agent and nanoscopic Al2O3 as a filler. The membranes were characterized by ac impedance, SEM, DSC. FTIR and fluorescence. An electrolyte with 2.5 wt% Al2O3 exhibited a conductivity of 9.8 x 10(-4) S cm(-1) at ambient temperature. It was found that filler contents above 2.5 wt% rendered the membranes less conducting. (c) 2008 Elsevier B.V. All rights reserved.