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Undoing lithium ion association in ionic liquids through the complexation by oligoethers

Bayley, Paul M., Lane, G. H., Lyons, L. J., MacFarlane, D. R. and Forsyth, M. 2010, Undoing lithium ion association in ionic liquids through the complexation by oligoethers, Journal of physical chemistry C, vol. 114, no. 48, pp. 20569-20576.

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Title Undoing lithium ion association in ionic liquids through the complexation by oligoethers
Author(s) Bayley, Paul M.
Lane, G. H.
Lyons, L. J.
MacFarlane, D. R.
Forsyth, M.
Journal name Journal of physical chemistry C
Volume number 114
Issue number 48
Start page 20569
End page 20576
Publisher American chemical society
Place of publication Washington, D.C.
Publication date 2010-12-09
ISSN 1520-6106
1520-5207
Summary Tetraglyme (TG) and the recently developed trimethylsilyl capped analogue (1NM3) when used as additives in a N-methyl-N-propylpyrrolidinium bis(trifluoromethylsulfonyl) amide [C3mpyr][NTf2]/0.65 M LiNTf2 electrolyte have been shown to dramatically enhance the transport properties of this electrolyte. In fact, at a concentration of 20 mol % tetraglyme (leading to a ratio of ~1:1 ether molecule per lithium ion), viscosity, conductivity, and the diffusion coefficients of the C3mpyr+ and NTf2− are practically reinstated to the values observed in the absence of lithium, thereby negating the structuring effects of the lithium ion. The 7Li T1 relaxation times also indicate that these additives strongly interact with the lithium ions. Furthermore, although TG has twice the viscosity of 1NM3, the greatest improvement in transport properties was observed for TG.
Language eng
Field of Research 091205 Functional Materials
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30035814

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