Carbon–Nb0.07Ti0.93O2 composite supported Pt–Pd electrocatalysts for PEM fuel cell oxygen reduction reaction

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DOIResolve DOI: http://doi.org/10.1016/j.electacta.2012.04.111
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TypeArticle
Journal titleElectrochimica Acta
ISSN0013-4686
Volume75
Pages220228; # of pages: 9
SubjectPt–Pd alloys; NbTiO2–carbon composite support; Oxygen reduction reaction; Fuel cell catalysts
AbstractCarbon–Nb0.07Ti0.93O2 (C67 wt%–(Nb0.07Ti0.93O2)33 wt%) composite support for Pt0.55Pd0.45 alloy catalysts was prepared by hydrolysis of metal alkoxides in the presence of carbon. Physical characterization by XRD, EDX, BET, TEM and TGA showed that the Nb0.07Ti0.93O2 was well distributed on the carbon particle surface with an average particle size of 15 nm, and this support has a high surface area of 176 m2/g and a similar porosity to that of carbon used to prepare this composite support. Pt0.55Pd0.45 alloy nanoparticles were deposited on the composite support to form a Pt0.55Pd0.45/C67 wt%–(Nb0.07Ti0.93O2)33 wt% catalyst, which shows a higher catalytic activity toward ORR than those of monometallic counterpart Pt/C67 wt%–(Nb0.07Ti0.93O2)33 wt%, Pt0.55Pd0.45/C, and Pt0.55Pd0.45/Nb0.07Ti0.93O2. Pt0.55Pd0.45/C67 wt%–(Nb0.07Ti0.93O2)33 wt% showed higher stability than Pt0.55Pd0.45/C, and similar to the commercially available Pt/C catalyst.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
NoteErratum published in volume 103, page 276, July 2013. DOI: 10.1016/j.electacta.2013.05.075
Peer reviewedYes
IdentifierS0013468612006986
NPARC number21268734
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Record identifierd0c9de54-8be0-4b44-9a1c-5d479dddafb0
Record created2013-11-08
Record modified2016-05-09
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