Abstract

Differential capacities, interfacial tensions and potentials of zero charge have been measured for LiClO 4 solutions in dimethylsulphoxide + propylene carbonate mixtures over a range of solvent compositions and electrolyte concentrations. Analysis of the data shows that dimethylsulphoxide is adsorbed preferentially at positive electrode charge, the extent of the adsorption increasing with the charge, and that contact adsorption of the ions is relatively weak from the mixed solvents. It was also found that preferential solvation, of Li + by dimethylsulphoxide, affects the experimental results significantly.

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