Publication: Fabrication and characterization of a solid polymeric electrolyte of PAN-TiO2-LiClO4
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Date
2010
Authors
Rahman M.Y.A.
Ahmad A.
Ismail L.H.C.
Salleh M.M.
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Abstract
The ionic conductivity of PAN-TiO2-LiClO4 as a function of TiO2 concentration and temperature has been reported. The electrolyte samples were prepared by solution casting technique. Their conductivity was measured using the impedance spectroscopy technique. The highest room temperature conductivity of 1.8 � 10-4 S cm-1 was obtained at 7.5 wt % of TiO2 filler. It was observed that the relationship between temperature and conductivity were linear, fitting well in Arrhenius and not in Vogel-Tamman-Fulcher equation. The pre-exponential factor, ?0 and Ea are 1.8 � 10-4 S cm-1 and 0.15 eV, respectively. The conductivity data have been supported by differential scanning calorimeter (DSC) analysis. DSC analysis showed that there was a significant change in glass transition temperature (Tg) with the filler concentration. The SEM micrograph revealed that the TiO2 particles are dispersed in the electrolyte, thus enhancing its conductivity. � 2009 Wiley Periodicals, Inc.
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Keywords
Ionic conductivity , PAN , Solid polymer electrolyte , TiO<sub>2</sub> , Differential scanning calorimetry , Electrolysis , Fillers , Glass transition , Ionic conductivity , Ions , Polyelectrolytes , Proton exchange membrane fuel cells (PEMFC) , Arrhenius , Conductivity data , Differential scanning calorimeter analysis , Filler concentration , Glass transition temperature , Impedance spectroscopy , Preexponential factor , Room-temperature conductivity , SEM micrographs , Solid polymer electrolyte , Solid polymer electrolytes , Solid polymeric electrolytes , Solution-casting technique , TiO , Vogel-tamman-fulcher equations , conductivity , electrolyte , fabrication , filling material , titanium dioxide , Ionic conduction in solids