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A 7Li and 19F NMR relaxation study of LiCF3SO3 in plasticised solid polyether electrolytes

journal contribution
posted on 01.12.1995, 00:00 authored by F Ali, Maria ForsythMaria Forsyth, M Garcia, M Smith, J Strange
7Li and 19F NMR relaxation time (T1, T2, T) measurements have been used to probe the dynamics of LiCF3SO3 dissolved in an amorphous co-polymer poly(ethylene oxide-co-propylene oxide), and in particular the influence of the plasticising agents propylene carbonate and dimethyl formamide. The changes in relaxation behaviour of 19F and 7Li with increasing plasticiser concentration are very different, as is the effect of each plasticiser. These differences can be explained qualitatively in terms of the interaction between the plasticiser and the ions. Preliminary 7Li T1ρ measurements reveal two components at low temperatures.

History

Journal

Solid state nuclear magnetic resonance

Volume

5

Issue

3

Pagination

217 - 225

Publisher

Academic Press

Location

London, England

ISSN

0926-2040

eISSN

1527-3326

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1995, Elsevier Science B.V.