Mathematical Modeling of Primary Zn/MnO2 Alkaline Batteries

X. Chadderdon[1], M. Wendling[1]
[1]Energizer Holdings, Inc., USA
Published in 2019

In this work, a mathematical model based on porous electrode theory was developed in COMSOL Multiphysics® simulation software to simulate discharge behavior of primary Zn/MnO2 alkaline batteries. The model integrates microscopic and macroscopic phenomena through incorporation of species diffusion in pseudo-2D geometries for both the anode and cathode. The predicted battery performance shows good agreement with experiments under various constant-current and current-interrupt discharge conditions. These results provide battery design engineers better understanding of polarization sources and insights that would otherwise be laborious to obtain.

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