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Factors Controlling Ionic Conductivity of Plasticized and Non-Plasticized Crosslinked Polyether Electrolytes

Published online by Cambridge University Press:  28 February 2011

Douglas R. MacFarlane ,
Jeffrey M. Hey  and
Maria Forsyth
Douglas R. MacFarlane
Affiliation:
Department of Chemistry, Monash University, Clayton, Victoria 3168, Australia
Jeffrey M. Hey
Affiliation:
Department of Chemistry, Monash University, Clayton, Victoria 3168, Australia
Maria Forsyth
Affiliation:
Department of Chemistry, Monash University, Clayton, Victoria 3168, Australia
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Abstract

A series of elastomeric (urethane crosslinked) polyether electrolytes have been prepared in order to investigate the influence on conductivity of crosslink density, length of uninterrupted polyether chain, number of side chains and plasticizer content. Crosslink density was found to only weakly influence conductivity, but had the expected major effect on elastic modulus. Increases in uninterrupted polyether chain length were also found to enhance conductivity. The number of side chains (acting as an internal plasticizer) was not found to have a marked effect on conductivity within the range studied. The highest room temperature conductivity observed in these non-plasticized elastomers was 3 × 10-5 Ω-1 cm-1. Addition of a low molecular weight plasticizer such as tetraglyme was found to markedly increase the conductivity and lower Tg. The highest room temperature conductivity observed in 50% plasticized elastomeric materials was 10-3 Ω-1cm-1.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 210: Symposium L – Solid State Ionics II , 1990 , 197
Copyright
Copyright © Materials Research Society 1991

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References

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