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Titolo:
Carbon monoxide poisoning of proton exchange membrane fuel cells
Autore:
Baschuk, JJ; Li, XG;
Indirizzi:
Univ Waterloo, Dept Mech Engn, Waterloo, ON N2L 3G1, Canada Univ WaterlooWaterloo ON Canada N2L 3G1 gn, Waterloo, ON N2L 3G1, Canada
Titolo Testata:
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
fascicolo: 8, volume: 25, anno: 2001,
pagine: 695 - 713
SICI:
0363-907X(20010625)25:8<695:CMPOPE>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTROCHEMICAL OXIDATION; CO; HYDROGEN; ELECTROOXIDATION; ELECTROLYTE; PERFORMANCE; ADSORPTION; METHANOL; ANODE; GAS;
Keywords:
fuel cell; carbon monoxide poisoning; proton exchange membrane fuel cell;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Li, XG Univ Waterloo, Dept Mech Engn, Waterloo, ON N2L 3G1, Canada Univ Waterloo Waterloo ON Canada N2L 3G1 erloo, ON N2L 3G1, Canada
Citazione:
J.J. Baschuk e X.G. Li, "Carbon monoxide poisoning of proton exchange membrane fuel cells", INT J ENERG, 25(8), 2001, pp. 695-713

Abstract

Proton exchange membrane fuel cell (PEMFC) performance degrades when carbon monoxide (CO) is present in the fuel gas; this is referred to as CO poisoning. This paper investigates CO poisoning of PEMFCs by reviewing work on the electrochemistry of CO and hydrogen, the experimental performance of PEMFCs exhibiting CO poisoning, methods to mitigate CO poisoning and theoretical models of CO poisoning. It is found that CO poisons the anode reaction through preferentially adsorbing to the platinum surface and blocking activesites, and that the CO poisoning effect is slow and reversible. There exist three methods to mitigate the effect of CO poisoning: (i) the use of a platinum alloy catalyst, (ii) higher cell operating temperature and (iii) introduction of oxygen into the fuel gas flow. Of these three methods, the third is the most practical. There are several models available in the literature for the effect of CO poisoning on a PEMFC and from the modeling efforts, it is clear that small CO oxidation rates can result in much increased performance of the anode. However, none of the existing models have considered the effect of transport phenomena in a cell, nor the effect of oxygen crossover From the cathode, which may be a significant contributor to CO tolerance in a PEMFC. In addition, there is a lack of data for CO oxidation and adsorption at low temperatures, which is needed for detailed modeling of COpoisoning in PEMFCs. Copyright (C) 2001 John Wiley & Sons, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 08:43:00