A Method for Estimating Transport Properties of Concentrated Electrolytes from Self-Diffusion Data

Abstract

A theoretical method is introduced that calculates the electrolyte-transport properties using Onsager–Stefan–Maxwell (OSM) theory (concentrated-solution theory) and the generalized-Darken relation. OSM theory is used to relate binary diffusivities to the transport properties of the electrolyte, including transference number, ionic conductivity, and Fickian diffusivity. The generalized-Darken relation is proposed to calculate the binary diffusivities of multicomponent systems from self-diffusivities. Finally, an example is demonstrated to show the details of how this method can be used to estimate transport properties. The calculated properties were reasonably close to the previously reported experimental values.