Ionic conductivity and electrochemical stability of poly(methylmethacrylate)-poly(ethylene oxide) blend-ceramic fillers composites

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Journal Article
Journal of Physics and Chemistry of Solids, 2008, 69 (1), pp. 243 - 248
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The role of inorganic ceramic fillers namely nanosized Al2O3 (15-25 nm) and TiO2 (10-14 nm) and ferroelectric filler SrBi4Ti4O15 (SBT CIT) (0.5 μm) synthesized by citrate gel technique (CIT) on the ionic conductivity and electrochemical properties of polymer blend 15 wt% PMMA+PEO8:LiClO4+2 wt% EC/PC electrolytes were investigated. Enhancement in conductivity was obtained with a maximum of 0.72×10-5 S cm-1 at 21 °C for 2 wt% of SrBi4Ti4O15 (SBT CIT) composite polymer electrolyte. The lithium-ion transport number and the electrochemical stability of the composite polymer electrolytes at ambient temperature were analyzed. An enhancement in electrochemical stability was observed for polymer composites containing 2 wt% of SrBi4Ti4O15 (SBT CIT) as fillers. © 2007 Elsevier Ltd. All rights reserved.
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