Characteristic simulation and numerical investigation of membrane electrode assembly in proton exchange membrane fuel cell

This study analyzes the characteristic numerical analysis of membrane electrode assembly in Proton Exchange Membrane Fuel Cell (PEMFC) with bipolar plate, flow channel, gas diffusion electrode, and proton exchange membrane. The numerical solution focuses on discussing the effects of different parameters, including permeability, porosity, and oper-ation voltage, on various mass fractions, current-voltage curve, and power-voltage curve.The results show that as the porous medium with high gas permeability is an important factor that affects the mass fraction of hydrogen. Regarding the analyses of various po-rosities, the fuel cell performance can be effectively promoted with larger ratio of porosity and permeability. However, increasing the porosity will affect the electrical conductivity and increase the flooding of water, which will block the flow channel and reduce efficiency.(c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

This study analyzes the numerical analysis of membrane electrode assembly in Proton Exchange Membrane Fuel Cell (PEMFC) and discusses the effects of parameters such as permeability, porosity, and oper-ation voltage on various fractions, curves, and efficiency. The results show that high gas permeability is an important factor affecting the hydrogen fraction. Increasing porosity can improve fuel cell performance, but it may also negatively impact electrical conductivity and increase water flooding, reducing efficiency.