Mathematical model of a PEM fuel cell incorporating CO poisoning and O2 (air) bleeding Online publication date: Mon, 10-May-2004
by J.J. Baschuk, Xianguo Li
International Journal of Global Energy Issues (IJGEI), Vol. 20, No. 3, 2003
Abstract: A one-dimensional mathematical model has been developed for a fully hydrated and isothermal PEM fuel cell. Mass transport in the gas flow channels, electrode backing and catalyst layers is accounted for, along with the adsorption, desorption and electro-oxidation of hydrogen and carbon monoxide. Additionally, the heterogeneous catalysis of hydrogen and carbon monoxide with oxygen is included for the simulation of oxygen or air bleeding. The model prediction agrees well with published, experimental data at various temperatures, pressures and carbon monoxide concentrations. Simulations with oxygen and air bleeding indicate that a threshold amount of oxygen or air bleeding exists; any increase in the amount of bleeding above the threshold amount results in no further mitigation of CO poisoning. The threshold amount of oxygen or air bleeding is a function of cell current density, with a greater cell current density demanding a larger threshold amount of oxygen or air bleeding.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Global Energy Issues (IJGEI):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook