Using CFD Models to Understand Poisoning in PEM Fuel Cells

摘要

The design,operation,and control of PEMFCs depend on proper water management,the rates of poisoning and recovery during carbon monoxide transients,and the response of the system to transient load changes.Models based on computational fluid dynamics (CFD) software can be used to understand these issues and the distributions of reactants and poisons under normal stoichiometric conditions.In this paper,predictions with these three-dimensional models are compared with water balance and current-voltage data from laboratory-scale cells for neat hydrogen and reformate fuels containing carbon monoxide.