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Lithium Coordination and Mobility in Gel Electrolytes Based on an Acrylate Polymer with Ethylene Oxide Side Chains.

Adebahr, J; Forsyth, M; MacFarlane, D R; Gavelin, Patrik LU and Jacobsson, P (2003) In Journal of Materials Chemistry 13(4). p.814-817
Abstract
Multinuclear NMR has been used to investigate the structure and mobility of a series of polymer gel electrolytes. The co-polymers used as matrixes in the gels have acrylate backbones and side chains of ethylene oxide, where the length of the side chains has been varied, while the ratio of acrylate to ethylene oxide has been kept constant. The electrolyte is a mixture of lithium perchlorate and two solvents, ethylene carbonate and gamma butyrolactone. 13C spectra of the different gel electrolytes shows that both solvents interact with the salt, and that the strength of the interaction increases with decreasing length of the polymer side chains. It also appears that the lithium ions show no selectivity between the two types of solvent.... (More)
Multinuclear NMR has been used to investigate the structure and mobility of a series of polymer gel electrolytes. The co-polymers used as matrixes in the gels have acrylate backbones and side chains of ethylene oxide, where the length of the side chains has been varied, while the ratio of acrylate to ethylene oxide has been kept constant. The electrolyte is a mixture of lithium perchlorate and two solvents, ethylene carbonate and gamma butyrolactone. 13C spectra of the different gel electrolytes shows that both solvents interact with the salt, and that the strength of the interaction increases with decreasing length of the polymer side chains. It also appears that the lithium ions show no selectivity between the two types of solvent. Furthermore, the lithium chemical shift moves progressively upfield with increasing length of the side chains, showing a gradual change in interaction from lithium–solvent to lithium–(ethylene oxide). (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Materials Chemistry
volume
13
issue
4
pages
814 - 817
publisher
Royal Society of Chemistry
external identifiers
  • wos:000181670900036
  • scopus:0037390083
ISSN
1364-5501
DOI
10.1039/b208354j
language
English
LU publication?
yes
id
db11acc8-1014-461e-9110-a37aa3372a0a (old id 129498)
date added to LUP
2007-06-26 08:50:01
date last changed
2017-01-01 04:34:07
@article{db11acc8-1014-461e-9110-a37aa3372a0a,
  abstract     = {Multinuclear NMR has been used to investigate the structure and mobility of a series of polymer gel electrolytes. The co-polymers used as matrixes in the gels have acrylate backbones and side chains of ethylene oxide, where the length of the side chains has been varied, while the ratio of acrylate to ethylene oxide has been kept constant. The electrolyte is a mixture of lithium perchlorate and two solvents, ethylene carbonate and gamma butyrolactone. 13C spectra of the different gel electrolytes shows that both solvents interact with the salt, and that the strength of the interaction increases with decreasing length of the polymer side chains. It also appears that the lithium ions show no selectivity between the two types of solvent. Furthermore, the lithium chemical shift moves progressively upfield with increasing length of the side chains, showing a gradual change in interaction from lithium–solvent to lithium–(ethylene oxide).},
  author       = {Adebahr, J and Forsyth, M and MacFarlane, D R and Gavelin, Patrik and Jacobsson, P},
  issn         = {1364-5501},
  language     = {eng},
  number       = {4},
  pages        = {814--817},
  publisher    = {Royal Society of Chemistry},
  series       = {Journal of Materials Chemistry},
  title        = {Lithium Coordination and Mobility in Gel Electrolytes Based on an Acrylate Polymer with Ethylene Oxide Side Chains.},
  url          = {http://dx.doi.org/10.1039/b208354j},
  volume       = {13},
  year         = {2003},
}