Abstract
The conductivity of 1.8 M LiAlCl 4/SOCl 2 electrolyte solutions showed the greatest temperature dependence at 298 K. Raman spectra results suggest that the adduct compound is Li(SOCl 2) y− x (SO 2) x +. The structural changes in LiAlCl 4/SOCl 2 electrolyte solutions were analyzed using 7 Li NMR spectroscopy. The 7 Li spin-lattice relaxation rate indicated a change in the ionic structure of the electrolyte near 298 K which was confirmed by measuring the chemical shifts and relaxation times under various temperatures and concentrations. The concentration effects on conductivity of LiAlCl 4/SOCl 2 electrolytes were also investigated. All experimental results suggest that the transition phenomenon in LiAlCl 4/SOCl 2 electrolyte solutions is related to the transformation between Li(SOCl 2) y− x (SO 2) x + and Li(SOCl 2) y +.
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