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Investigation of the (PEG)xLiCl system using conductivity, DSC and NMR techniques

Gupta, Shiuli and Shahi, K and Binesh, Nader and Bhat, SV (1993) Investigation of the (PEG)xLiCl system using conductivity, DSC and NMR techniques. In: Solid State Ionics, 67 (1-2). pp. 97-105.

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Official URL: http://dx.doi.org/10.1016/0167-2738(93)90314-S

Abstract

Electrolytes based on polyethylene glycol (PEG, mol.wt.8000) and LiCl of compositions, (PEG)(x)LiCl, x=4, 6, 8, 10, 12, 40, 60, where x is the O/Li ratio, were prepared by solution casting from methanol solutions. FTIR studies indicate that the ether oxygens of the polymer chain participate in Li+ ion conduction. The presence of a salt-polymer complex that melts around 190 degrees C was evidenced by DSC measurements for the electrolytes with compositions x<12. The highest conductivity was obtained at the composition x=10 which was attributed to the presence of a mostly amorphous compound. NMR measurements indicated two regions of motional narrowing, one attributable to the glass transition and another to translational diffusion.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 11 Feb 2011 06:41
Last Modified: 11 Feb 2011 06:41
URI: http://eprints.iisc.ernet.in/id/eprint/35515

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