Analytical-based simulation approach for an anion exchange membrane fuel cell
Joy Marie Mora, Mrittunjoy Sarker, Zabihollah Najafianashrafi, Md Azimur Rahman, Ami C. Yang-Neyerlin, Bryan S. Pivovar, Po‐Ya Abel Chuang
Abstract
An analytical and empirical-based 1-D, non-isothermal, steady-state model for anion exchange membrane fuel cell capable of capturing two-phase phenomena is presented in this study. Coupled multi-physics including mass and charge transport, electrochemical reactions, heat transfer, and two-phase water transport are considered in the model and the simulated results are compared to experimental data. To better represent actual material properties and localized conditions, the model applies multilayer discretization in the gas diffusion electrode to enhance prediction accuracy. The model successfully predicts the baseline performance at 70 °C, 131 kPa abs., 92% RH with pure H2/O2 gas as well as the limiting current at 10% H2. The robust simulation approach allows for simplistic and accurate estimation of cell performance without the complications of applying two-phase parameters and expensive computational need for numerical models. In addition, the results from the sensitivity studies of material properties and operating conditions provide valuable insights on water management strategies and optimal component design for advancing anion exchange membrane fuel cell technology.