Simulation of species transport in metal air battery

Abstract

In this work a type of Li-air battery is studied which has the most high courant density. This kind of batteries is formed by anode of metal and a cathode of porous carbon where oxygen passes through it to ionize and react with electrodes during discharge phase. In order to study the physics phenomenon, the simplified mathematical model is chosen. Using the "Matalab" software, the effect of porosity factors, current intensity and reaction velocity on specific capacity are examined. In addition, the concentration of oxygen in the cathode layers is investigated. The obtained results are in good concordance with experimental data found in the literature. Keywords: battery Li-air, cathode, oxygen concentration, specific capacity