Composition effects on ion transport in a polyelectrolyte gel with the addition of ion dissociators

Byrne, N., MacFarlane, D. R. and Forsyth, M. 2005, Composition effects on ion transport in a polyelectrolyte gel with the addition of ion dissociators, Electrochimica acta, vol. 50, no. 19, pp. 3917-3921, doi: 10.1016/j.electacta.2005.02.068.

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Title Composition effects on ion transport in a polyelectrolyte gel with the addition of ion dissociators
Author(s) Byrne, N.ORCID iD for Byrne, N.
MacFarlane, D. R.
Forsyth, M.ORCID iD for Forsyth, M.
Journal name Electrochimica acta
Volume number 50
Issue number 19
Start page 3917
End page 3921
Publisher Elsevier Science Pub. Co.
Place of publication New York, N.Y.
Publication date 2005-06-30
ISSN 0013-4686
Keyword(s) single ion conductor
Summary The polymerization of lithium 2-acrylamido-2-methyl-1-propane sulphonic acid with N,N′-dimethylacrylamide has yielded polyelectrolyte gels which have the favourable property of being single ion conductors. The use of single ion conductors ensures that the transport number of lithium is close to unity. The mobility of the lithium ion is still quite low in these systems, resulting in low ionic conductivity. To increase ionic conductivity more charge carriers can be added however competing effects arise between increasing the number of charge carriers and decreasing the mobility of these charge carriers. In this paper the monomer ratio of the copolymer polyelectrolyte is varied to investigate the effect increasing the number of charge carriers has on the ionic conductivity and lithium ion and solvent diffusivity using pfg-NMR. Ion dissociators such as TiO2 nano-particles and a zwitterionic compound based on 1-butylimidazolium-3-(N-butanesulfonate) have been added in an attempt to further increase the ionic conductivity of the system. It was found that the system with the highest ionic conductivity had the lowest solvent mobility in the presence of zwitterion. Without zwitterion the mobility of the solvent appears to determine the maximum ionic conductivity achievable.
Language eng
DOI 10.1016/j.electacta.2005.02.068
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 ©2005, Elsevier Ltd.
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