A nuclear magnetic resonance study of Li-7 dynamics in polyether-urethane based solid polymer electrolytes

Ng, Simon T.C. and Forsyth, Maria and Garcia, Maria and MacFarlane, Douglas R. and Smith, Mark E. (1998) A nuclear magnetic resonance study of Li-7 dynamics in polyether-urethane based solid polymer electrolytes. In: 5th International Symposium on Polymer Electrolytes (ISPE-5), Aug 10-16, 1996 , Uppsala, Sweden. (The full text of this publication is not available from this repository)

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Abstract

Nuclear magnetic resonance (NMR) is a technique that allows the probing of the dynamics of specific magnetically active nuclei. In the present study a polyethylene glycol network containing varying concentrations of LiClO4 have been studied using Li-7 NMR relaxation techniques. A plasticiser, tetraglyme, has been added to several samples to improve the mobility of the polymer and thus of the ionic species. The effects of tetraglyme and salt concentration on the cationic mobility and environment have been investigated using T-1 and T-2 relaxation experiments, with the presence of two cationic species of differing relaxation times (and possibly mobility) reported. The results are discussed with relevance to conductivity measurements made on similar samples.

Item Type: Conference or workshop item (Paper)
Uncontrolled keywords: polymer electrolytes; lithium-7 NMR; plasticisers; conductivity; NMR relaxation studies; ionic aggregation
Subjects: Q Science
T Technology
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: M.A. Ziai
Date Deposited: 29 Jun 2011 08:15
Last Modified: 16 Jun 2014 15:14
Resource URI: http://kar.kent.ac.uk/id/eprint/17470 (The current URI for this page, for reference purposes)
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