sulfolane

The physicochemical properties of lithium salt solutions in the mixtures of sulfolane with dimethyl disulfide were studied. It was established that the introduction of dimethyl disulfide (5–10% mas.) into sulfolane solutions of lithium perchlorate and lithium trifluoromethanesulfonate leads to the increase in their specific ion conductivity, the decrease in the viscosity, and the reduction in the activation energies of the specific ion conductivity and the viscous flow.

To increase the accuracy of determining the lithium cation transference numbers we proposed to measure them at different values of the polarizing voltage and extrapolate the calculated values to the zero value of the polarizing voltage.

The temperature dependencies of physical and chemical properties (viscosity, density, electrical conductivity) and the melting temperature of 1M solutions of lithium salts (LiClO₄ and LiBF₄) in the mixture of sulfolane and sulfurous anhydride (∼1M) were studied.