Current density and ZnO precipitation-dissolution distributions in Zn-ZnO porous electrodes and their effect on material redistribution : a two dimensional mathematical model

The model calculates electrode and electrolyte potentials, current density distribution, electrolyte concentrations, and Zn and ZnO distributions. The primary assumptions are a uniform-composition counterelectrode, a constant potential along the boundary separating the Zn-ZnO electrode from the counterelectrode, no convective flow, and an infinite electronic-matrix conductivity. The model predicts movement of the active material from the centre of the electrode toward the edge of the electrode. 15 refs.