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 (1525 nm) and TiO2 (1014 nm) and ferroelectric filler SrBi4Ti4O15 (SBT CIT) (0.5 ?m) 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.
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