화학공학소재연구정보센터
Journal of the Electrochemical Society, Vol.141, No.7, 1751-1758, 1994
Modeling of Cylindrical Alkaline Cells .7. A Wound Cell Model
A one-dimensional mathematical model of alkaline Zn-MnO2 cells is used to simulate a wound geometry. It is the first simulation to describe the distribution of species, overpotential, solution current density, porosity, and volume average velocity within a wound cell to assess the reactant utilization. The model accounts for the porous nature of the electrodes and separator in a concentrated electrolyte at a high discharge rate. Virtual current collectors are introduced to transform the inherently two-dimensional spiral geometry into a simplified one-dimensional analysis. The results predict a superior material utilization for a wound cell rather than a bobbin design, due to a more uniform distribution of species created by an enhancement of the electrode-separator interfacial area.