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NMR measurements of ionic mobility in model polymer electrolyte solutions

Williamson, M. J., Southall, J. P., Hubbard, H. V.St. A., Johnston, Sean F., Davies, G. R., and Ward, I. M. (1998) NMR measurements of ionic mobility in model polymer electrolyte solutions. Electrochimica Acta, 43 (10-11). pp. 1415-1420. ISSN 0013-4686 (doi:10.1016/S0013-4686(97)10077-9)

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Abstract

19-F and 7-Li pulsed field gradient (PFG) NMR measurements have been undertaken to determine anion and cation diffusion coefficients of tetraethylene glycol dimethyl ether/LiCF3SO3 and N,N dimethyl formamide/LiCF3SO3 solutions over a range of temperatures and concentration. The diffusion of the solvent molecules has been determined by 1-H PGF NMR measurements. In addition, viscosity and ionic conductivity conductivity measurements have been undertaken. The ionic diffusion and ionic conductivity data are discussed in terms of the Nernst-Einstein equation and the relationship between ionic diffusion and viscosity are considered in terms of the Stokes-Einstein equation. Finally NMR T1 data are considered in terms of diffusion and rotation of solvent molecules.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s):Johnston, Prof Sean
Authors: Williamson, M. J., Southall, J. P., Hubbard, H. V.St. A., Johnston, Sean F., Davies, G. R., and Ward, I. M.
Subjects:Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TP Chemical technology
College/School:College of Social Sciences > School of Interdisciplinary Studies
Journal Name:Electrochimica Acta
ISSN:0013-4686

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