Effects of synthesis condition on formation of desired crystal structures of doped-TiO2/carbon composite supports for ORR electrocatalysts

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DOIResolve DOI: http://doi.org/10.1016/j.electacta.2012.05.100
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TypeArticle
Journal titleElectrochimica Acta
ISSN0013-4686
Volume77
Pages225231; # of pages: 7
SubjectDoped-TiO2; Thermal hydrolysis; Hybrid support; Oxygen reduction mass activity; Durability of supports; TiO2 anatase-to-rutile transition; PEM fuel cell
AbstractThe composite supports, (Nb0.07Ti0.93O2)25wt%–C75wt% and (Nb0.07Ti0.93O2)70wt%–C30wt%, as well as their supported Pt–Pd alloy electrocatalysts, 20 wt%Pt0.62Pd0.38/((Nb0.07Ti0.93O2)25wt%–C75wt%)80wt% and 20 wt%Pt0.62Pd0.38/((Nb0.07Ti0.93O2)70wt%–C30wt%)80wt% for oxygen reduction reaction (ORR), are synthesized, respectively, using an acid-water based solution as solvent. The effects of three factors, namely concentration of HCl, the ratio of titanium precursor to solvent, and the ratio of metal-oxide to carbon in the composite support, on the TiO2 anatase-to-rutile transition are investigated in an effort to optimize the supports and their supported catalysts with respect to both ORR catalytic activity and durability. Based on both the high ORR activity and durability, these catalysts should be feasible if used in PEM fuel cells as cathode electrocatalysts.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
NoteErratum published in volume 103, page 277, July 2013. DOI: 10.1016/j.electacta.2013.05.076
Peer reviewedYes
IdentifierS0013468612008973
NPARC number21268735
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Record identifier2bdd04c5-3529-46f6-9658-eb1dce464848
Record created2013-11-12
Record modified2016-05-09
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