Nanocomposite PEO-based polymer electrolyte using a highly porous, super acid zirconia filler

摘要

In this work we report a new composite, PEO-based lithium polymer electrolyte containing a micro-sized,nanoporous zirconium-oxide-sulfate (Zr-O-SO4) filler synthesized by a surfactant templating sol-gel route.By thermal and transport studies, we show that the particular morphology of the filler enhances theproperties of the material leading to a solvent-free electrolyte having unique features in terms of ionicconductivity, lithium ion transference number and thermal behaviour. Finally, the galvanostatic test of thelithium battery prepared using lithium iron phosphate, LiFePO4, as the cathode, lithium metal as the anodeand the studied membrane as the electrolyte, shows enhanced performances also at the medium-lowtemperatures.