The effect of nano-particle TiO2 fillers on structure and transport in polymer electrolytes

摘要: Nano-particle oxide fillers including TiO2, SiO2 and Al2O3 have previously been shown to a significant affect on the properties of polymer electrolytes, especially those based polyether–lithium salt systems. In some cases, conductivity increases more than one order magnitude reported in crystalline PEO-based complexes. this work, we report effects TiO2 completely amorphous polyether-based system remove complication multiple phases presented by semi-crystalline nature PEO. Multinuclear magnetic resonance spectroscopy has that lithium ion environment is changed addition filler. Vibrational shows filler influences disordered-longitudinal acoustic modes (DLAM) case an polyether suggests interaction between surface polymer. Positron annihilation lifetime indicates increase free volume upon polyether–salt complex, coinciding with apparent mobility as determined from 1H T2 NMR measurements. Impedance clear evidence inter-phase region may be or less conductive bulk electrolyte itself. The data support model which includes conduction through interfacial