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Effects of open-circuit operation on membrane and catalyst layer degradation in proton exchange membrane fuel cells

Zhang, Shengsheng and Yuan, Xiao-Zi and Hin, Jason Ng Cheng and Wang, Haijiang and Wu, Jinfeng and Friedrich, K. Andreas and Schulze, Mathias (2010) Effects of open-circuit operation on membrane and catalyst layer degradation in proton exchange membrane fuel cells. Journal of Power Sources, 195, pp. 1142-1148. Elsevier. DOI: 10.1016/j.powsour.2009.08.070 ISSN 0378-7753

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Durability issues have been attracting a great deal of attention in hydrogen/air proton exchange membrane (PEM) fuel cell research. In the present work, membrane electrode assembly (MEA) degradation under open circuit (OC) conditions was carried out for more than 250 h. By means of several on-line electrochemical measurements, the performance of the fuel cell was analysed at different times during the degradation process. The results indicate that structural changes in the PEM and catalyst layers (CLs) are the main reasons for the decline in performance during OC operation. The results also show that degradation due to platinum oxidation or catalyst contamination can be partially recovered by a subsequent potential cycling process, whereas the same cycling process cannot recover the membrane degradation.

Item URL in elib:https://elib.dlr.de/60683/
Document Type:Article
Title:Effects of open-circuit operation on membrane and catalyst layer degradation in proton exchange membrane fuel cells
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zhang, ShengshengNational Research Council CanadaUNSPECIFIED
Yuan, Xiao-ZiNational Research Council CanadaUNSPECIFIED
Hin, Jason Ng ChengNational Research Council CanadaUNSPECIFIED
Wang, HaijiangNational Research Council CanadaUNSPECIFIED
Wu, JinfengNational Research Council CanadaUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Schulze, Mathiasmathias.schulze (at) dlr.deUNSPECIFIED
Journal or Publication Title:Journal of Power Sources
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.powsour.2009.08.070
Page Range:pp. 1142-1148
Keywords:PEM fuel cell Membrane Catalyst layer Degradation Open-circuit operation Open circuit voltage
HGF - Research field:Energy, Aeronautics, Space and Transport
HGF - Program:Efficient Energy Conversion (old), Transport
HGF - Program Themes:E EV - Energy process technology (old), E BZ - Fuel cells (old), Terrestrial Vehicles (old)
DLR - Research area:Energy, Transport
DLR - Program:E EV - Energy process technology, E BZ - Fuel cells, V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):E - Elektrochemische Prozesse (old), E - Membran-Brennstoffzellen (old), V - Fahrzeugenergiesysteme (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:10 Nov 2009 14:26
Last Modified:12 Dec 2013 20:45

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