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Enhancement of ion dynamics in PMMA-based gels with addition of TiO2 nano-particles
journal contribution
posted on 2003-06-30, 00:00 authored by J Adebahr, Nolene ByrneNolene Byrne, Maria ForsythMaria Forsyth, D MacFarlane, P JacobssonSolvent and ion dynamics in PMMA based gels have been investigated as a function of the loading of nanosized TiO2 particles. The gels have a molar ratio of 46.5:19:4.5:30 of ethylene carbonate (EC), propylene carbonate (PC), lithium perchlorate and PMMA, respectively. A series of samples with 0, 4, 6 and 8 wt.% TiO2 filler were investigated. The diffusion coefficients for the lithium ions and for the two solvents (EC and PC) were investigated by pfg-NMR. It was shown that the addition of filler to the gel electrolytes enhances the diffusion of the cations, while the diffusion of the solvents remains constant. Raman measurements show no significant changes in ion–ion interactions with the addition of fillers, while the ionic conductivity is seen to decrease. However, the sample with 8 wt.% TiO2 had a conductivity close to that of the unfilled sample.
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Journal
Electrochimica actaVolume
48Issue
14-16Pagination
2099 - 2103Publisher
Elsevier Science Pub. Co.Location
New York, N.Y.Publisher DOI
ISSN
0013-4686eISSN
1873-3859Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2003, Elsevier Science Ltd.Usage metrics
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