| Issue |
Europhys. Lett.
Volume 54, Number 3, May 2001
|
|
|---|---|---|
| Page(s) | 347 - 353 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2001-00249-7 | |
| Published online | 01 December 2003 | |
Lithium environment in PEO-
polymer electrolyte
1
Argonne National Laboratory, Argonne, IL 60439, USA
2
Centre de Recherche sur la Matière Divisée,
CRMD UMR6619 Université d'Orléans-CNRS -
1bis rue de la Férollerie 45071 Orleans Cedex 2, France
3
Institut Laue Langevin, Grenoble 38041, France
Corresponding author: saboungi@anl.gov
Received:
17
August
2000
Accepted:
15
February
2001
The average local structure around 
cations in a polymer
electrolyte, 
, has been determined by
neutron diffraction with isotope substitution. In this
environment, the ions are predominantly coordinated by 
ether oxygens. The intermediate-range order is enhanced relative
to the pure polymer by the expansion of the network on the
addition of the salt. The excess volume introduced must play a
key role in facilitating the lithium ion conduction.
PACS: 61.20.Qg – Structure of associated liquids: electrolytes, molten salts, etc
© EDP Sciences, 2001
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