Abstract
Li-air battery has attracted much attention because of its large theoretical capacity. Aqueous type has an advantage of avoiding an issue pore clogging because the reaction products are water soluble. Detailed assessments of material behavior in the battery are important to make practical. We have not however got the knowledge because of complexity structure at porous media of cathode side. In this study, we made a numerical simulation using Lattice Boltzmann Method (LBM) to calculate a distribution of Li^+(Cl^-), electric potential and O_2. Interpretations between the transport/reduction of Li^+ and O_2 are made in detail.