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The enhancement of lithium ion dissociation in polyelectrolyte gels on the addition of ceramic nano-fillers

journal contribution
posted on 01.01.2004, 00:00 authored by Nolene ByrneNolene Byrne, Jim Efthimiadis, D MacFarlane, Maria ForsythMaria Forsyth
Nano-particle oxide fillers including TiO2, SiO2 and Al2O3 have previously been shown to have a significant affect on the properties of both polymer and polymer gel electrolytes. In some cases, conductivity increases of one order of magnitude have been reported in crystalline PEO–base complexes. In this work, we report the effects of TiO2 and SiO2 on a poly(Li-AMPS)-based gel polyelectrolyte. Impedance spectroscopy and pfg-NMR spectroscopy indicates an increase in the number of available charge carriers with the addition of filler. An ideal amount of ceramic filler has been identified, with additional filler only saturating the system and reducing the conductivity below that of the pristine polyelectrolyte system. SEM micrographs suggest a model whereby the filler interacts readily with the sulfonate group; the surface area of the filler being an important factor.

History

Journal

Journal of materials chemistry

Volume

14

Issue

1

Pagination

127 - 133

Publisher

Royal Society of Chemistry

Location

Cambridge, England

ISSN

0959-9428

eISSN

1364-5501

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2004, Royal Society of Chemistry