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Effect of ceria nanoparticles into the Pt/C catalyst as cathode material on the electrocatalytic activity and durability for low-temperature fuel cell

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dc.contributor.authorLim, Dong-Ha-
dc.contributor.authorLee, Weon-Doo-
dc.contributor.authorChoi, Dong-Hyeok-
dc.contributor.authorLee, Ho-In-
dc.date.accessioned2010-03-17-
dc.date.available2010-03-17-
dc.date.issued2010-
dc.identifier.citationApplied Catalysis B: Environmental 94 (2010) 85–96en
dc.identifier.issn0926-3373-
dc.identifier.urihttps://hdl.handle.net/10371/61275-
dc.description.abstractAn effective method is developed for preparing highly dispersed CeO2 nanoparticles on a Pt/C catalyst
synthesized by a continuous two-step process as a cathode material in low-temperature fuel cell. The
XRD patterns of the 20Pt–10CeO2/C catalyst reveal that both crystalline Pt and CeO2 phases coexist. The
HR-TEM images show that Pt and CeO2 nanoparticles have average particle sizes of approximately
3.4 nm and 4.2 nm, respectively, with quite a narrow distribution between 3 nm and 5 nm. Based on the
analysis of the polarization curves for the ORR, the optimum proportion of CeO2 into the 20Pt/C catalyst
is 10 wt%. In the ORR and single cell tests, the 20Pt–10CeO2/C catalyst shows higher performance than
the commercial 20Pt/C catalyst, owing to the oxygen storage capacity of CeO2 and its ability to exchange
oxygen rapidly with oxygen in the buffer. In the accelerated stability tests, the 20Pt–10CeO2/C catalyst
has a better durability compared to the commercial 20Pt/C catalyst due to the existence of CeO2, which
prevents the agglomeration and dissolution of Pt nanoparticles on the carbon support, extending the life
of the catalyst.
en
dc.description.sponsorshipthe Brain Korea 21
Project in 2006 and the ERC Program of MOST/KOSEF (Grant No.
R11-2002-102-00000-0)
en
dc.language.isoenen
dc.publisherElsevieren
dc.subjectContinuous two-step processen
dc.subjectNano-sized metal oxideen
dc.subjectPt–CeO2/C electrocatalysten
dc.subjectOxygen reduction reactionen
dc.subjectAccelerated durabilityen
dc.subjectLow-temperature fuel cellen
dc.titleEffect of ceria nanoparticles into the Pt/C catalyst as cathode material on the electrocatalytic activity and durability for low-temperature fuel cellen
dc.typeArticleen
dc.contributor.AlternativeAuthor임동하-
dc.contributor.AlternativeAuthor이원두-
dc.contributor.AlternativeAuthor최동혁-
dc.contributor.AlternativeAuthor이호인-
dc.identifier.doi10.1016/j.apcatb.2009.10.024-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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