NMR measurements of ionic mobility in model polymer electrolyte solutions

Williamson, M. J., Southall, J. P., Hubbard, H. V.S. A., Johnston, S. 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. (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:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Johnston, Professor Sean
Authors: Williamson, M. J., Southall, J. P., Hubbard, H. V.S. A., Johnston, S. 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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