Numerical Analysis of Ionic Mass Transfer Phenomena Accompanying Electrochemical Reactions in PC and Ionic Liquid

Abstract

The transient mass transfer rate of Li⁺ ion caused by the electrochemical deposition and dissolution of Li metal in propylene carbonate (PC) and ionic liquid (IL) containing a lithium salt is numerically analyzed. The previous mesurements of transport properties such as diffusion coefficient of a lithium salt and electrolyte viscosity are used in the present calculation. The concentration profile of Li⁺ ion developed along electrode surface has been in-situ measured by holographic interferometry. The measurement values are reasonably compared with the calculations except for the apparent incubation period observed in the initial stage of electrochemical deposition and dissolution.