Transients of Water Distribution and Transport in PEM Fuel Cells

Handle URI:
http://hdl.handle.net/10754/600063
Title:
Transients of Water Distribution and Transport in PEM Fuel Cells
Authors:
Hussaini, Irfan S.; Wang, Chao-Yang
Abstract:
The response of polymer electrolyte membrane (PEM) fuel cells to a step change in load is investigated experimentally in this work. Voltage undershoot, a characteristic feature of transient response following a step increase in current, is due to transients of water distribution in the membrane and ionomers occurring at subsecond time scales. The use of humidified reactants as a means to control the magnitude of voltage undershoot is demonstrated. Further, the response under a step decrease in current density is explored to determine the existence of hysteresis. Under sufficiently humidified conditions, the responses under forward and reverse step changes are symmetric, but under low relative humidity conditions, voltage undershoot is twice as large as the overshoot. © 2009 The Electrochemical Society.
Citation:
Hussaini IS, Wang C-Y (2009) Transients of Water Distribution and Transport in PEM Fuel Cells. J Electrochem Soc 156: B1394. Available: http://dx.doi.org/10.1149/1.3236646.
Publisher:
The Electrochemical Society
Journal:
Journal of The Electrochemical Society
Issue Date:
2009
DOI:
10.1149/1.3236646
Type:
Article
ISSN:
0013-4651
Sponsors:
Funding for this work from ECEC industrial sponsor is gratefully acknowledged. I. S. H. also acknowledges the King Abdullah University of Science and Technology (KAUST), Saudi Arabia, for a fellowship award.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorHussaini, Irfan S.en
dc.contributor.authorWang, Chao-Yangen
dc.date.accessioned2016-02-28T06:35:19Zen
dc.date.available2016-02-28T06:35:19Zen
dc.date.issued2009en
dc.identifier.citationHussaini IS, Wang C-Y (2009) Transients of Water Distribution and Transport in PEM Fuel Cells. J Electrochem Soc 156: B1394. Available: http://dx.doi.org/10.1149/1.3236646.en
dc.identifier.issn0013-4651en
dc.identifier.doi10.1149/1.3236646en
dc.identifier.urihttp://hdl.handle.net/10754/600063en
dc.description.abstractThe response of polymer electrolyte membrane (PEM) fuel cells to a step change in load is investigated experimentally in this work. Voltage undershoot, a characteristic feature of transient response following a step increase in current, is due to transients of water distribution in the membrane and ionomers occurring at subsecond time scales. The use of humidified reactants as a means to control the magnitude of voltage undershoot is demonstrated. Further, the response under a step decrease in current density is explored to determine the existence of hysteresis. Under sufficiently humidified conditions, the responses under forward and reverse step changes are symmetric, but under low relative humidity conditions, voltage undershoot is twice as large as the overshoot. © 2009 The Electrochemical Society.en
dc.description.sponsorshipFunding for this work from ECEC industrial sponsor is gratefully acknowledged. I. S. H. also acknowledges the King Abdullah University of Science and Technology (KAUST), Saudi Arabia, for a fellowship award.en
dc.publisherThe Electrochemical Societyen
dc.titleTransients of Water Distribution and Transport in PEM Fuel Cellsen
dc.typeArticleen
dc.identifier.journalJournal of The Electrochemical Societyen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
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