Ion transport in polymer electrolytes containing nanoparticulate TiO2 : The influence of polymer morphology

Adebahr, J., Best, A. S., Byrne, N., Jacobsson, P., MacFarlane, D. R. and Forsyth, M. 2003, Ion transport in polymer electrolytes containing nanoparticulate TiO2 : The influence of polymer morphology, Physical chemistry chemical physics, vol. 5, no. 4, pp. 720-725.

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Title Ion transport in polymer electrolytes containing nanoparticulate TiO2 : The influence of polymer morphology
Author(s) Adebahr, J.
Best, A. S.
Byrne, N.
Jacobsson, P.
MacFarlane, D. R.
Forsyth, M.
Journal name Physical chemistry chemical physics
Volume number 5
Issue number 4
Start page 720
End page 725
Publisher Royal Society of Chemistry
Place of publication Cambridge, England
Publication date 2003
ISSN 1463-9076
1463-9084
Summary Recent studies have shown that composite polymer electrolytes, formed by dispersing nanosized ceramic particles in polyether-based electrolytes, have improved ion transport properties as compared to their unfilled analogues. In the present study polymer electrolytes with different loadings of nano-sized ceramic particles (TiO2) and different polymer chemistry and morphology have been investigated. Of special interest are filler induced effects on polymer, solvent and cationic mobility. Partly crystalline polymer electrolytes based on poly(ethylene oxide) have been compared to fully amorphous polymer electrolytes based on a polyether urethane, as well as gel electrolytes based on PMMA. 7Li pfg-NMR, linewidth and spin–spin relaxation times as well as 1H pfg-NMR and spin–spin relaxation times, were measured as a function of temperature and composition. The 1H spin–spin relaxation measurements reveal increased average polymer mobility with the addition of filler up to a maximum at 4 and 8 wt.% TiO2 for the fully amorphous and the partly crystalline electrolytes, respectively. The 7Li linewidth measurements for the fully amorphous system show a broadening of the linewidth with addition of filler. Based on variable temperature measurements this broadening is interpreted as a result of the inhomogeneity introduced by the filler particles. Pulsed field gradient (pfg) diffusion measurements were employed to determine ion and solvent self-diffusion coefficients. In the case of the PMMA-based gel electrolyte and the fully amorphous electrolytes enhanced cation self-diffusion was observed upon addition of TiO2.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2003, Owner Societies
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030040

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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