Precise viscosity data for aqueous binary mixtures of ethylene glycol (EG), 2-methoxyethanol (ME), and 1,2-dimethoxyethane (DME) at different mole fractions and at various temperatures are presented. EG behaves as a structure breaker showing negative deviation in viscosity–composition curve. Hydrophobic solutes ME and DME showed typical maximum in viscosity–composition curve in water rich region; attributed to the existence of “microheterogeniety” in these mixtures.

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q ABSTRACTThe kinetic and morphological properties of the surface layers formed on lithium electrode in different sulfolanebased electrolytes have been investigated. Application of the impedance theory of the dilute binary electrolyte has allowed a determination of characteristic parameters of the surface layers, such as their cationic transference numbers, salt diffusion coefficients, and ionic concentrations. The values obtained for these parameters have demonstrated that the surface layers behave similarly to their parent liquid electrolytes but with much lower ionic concentrations. In addition, this study has shown that satisfactory cycling performances can be obtained when the values of the characteristic parameters of the layers are close to those of the parent electrolytes. Supplementary tests based on the evaluation of the layer conductivity, the Warburg constant, and the limiting current density, have been proposed for the selection of appropriate organic electrolytes and cycling procedures to be used in secondary lithium batteries.Cycling efficiency measurements.---To avoid excessive cycling durations, the lithium cylinders were rep]aced by

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Dielectoric constant data for aqueous binary mixtures of ethylene glycol (EG), 2-methoxyethanol (ME), and 1,2-dimethoxyethane (DME) at different mole fractions and at various temperatures are reported. A decrease in dielectric constant values has been observed with the increase in solvent content of the mixture as well as the temperature in case of all the three systems. The variations in Kirkwood’s correlation factor (gK) with respect to the solvent composition in the three types of mixtures have been attributed to the short-range dipolar interactions which lead to structural changes in respective solvent mixtures.