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dc.contributor.author조유연-
dc.contributor.author조은애-
dc.contributor.author김재홍-
dc.contributor.author김정현-
dc.contributor.author임태훈-
dc.contributor.author오인환-
dc.contributor.author장종현-
dc.contributor.author김형준-
dc.date.accessioned2015-12-02T15:27:07Z-
dc.date.available2015-12-02T15:27:07Z-
dc.date.issued201004-
dc.identifier.other32457-
dc.identifier.urihttp://pubs.kist.re.kr/handle/201004/37552-
dc.description.abstractEffects of operating temperature on performance degradation of PEMFCs were investigated under the repetitive on/off cycling operation to optimize operating conditions for fuel cell vehicles. Performance was traded off with durability of PEMFCs; at higher operating temperature, initial performance of a single cell was better while performance degradation was faster in order of 80, 65 and 40 ℃. With repeating startup/shutdown cycles, polarization curves, electrochemical impedance spectroscopy (EIS), cyclic voltam-metry (CV), linear sweep voltammetry (LSV) were measured to examine in-situ degradation of the MEAs. To investigate physic-chemical degradation of the MEAs, scanning electron microscopy (SEM), electron probe micro analyzer (EPMA) and transmission electron microscopy (TEM) were employed before and after the durability tests.-
dc.publisherMeeting of the Electrochemical Society-
dc.subjectPEMFC-
dc.subjectDurability-
dc.subjectOperating temperature-
dc.subjectOn/off cycling-
dc.titleEffects of operating temperature on performance degradation of PEMFCs under repetitive startup/shutdown cycling-
dc.typeConference Paper-
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