Characteristics of cubic and tetragonal PtₓFey/C and PtₓFeₓCu/C catalysts for the O₂ electro-reduction

Download
  1. Get@NRC: Characteristics of cubic and tetragonal PtₓFey/C and PtₓFeₓCu/C catalysts for the O₂ electro-reduction (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1149/1.3654203
AuthorSearch for: ; Search for: ; Search for: ; Search for:
TypeArticle
Proceedings titleECS Transactions
ConferenceNanostructured Materials for Energy Storage and Conversion - 219th ECS Meeting, 1 May 2011 through 6 May 2011, Montreal, QC
ISSN1938-5862
ISBN9781607682943
Volume35
Issue34
Pages6980; # of pages: 12
SubjectCatalyst particle size; Cubic alloys; Electro reduction; Mass activity; Reduction reaction; Structural differences; Supported Pt; Energy storage; Iron alloys; Nanostructured materials; Platinum; Platinum alloys; Rietveld analysis; Catalyst activity
AbstractCarbon supported Pt based (Pt/C) catalysts are prepared and characterized. Cubic Pt 3Fe/C, tetragonal PtFe/C and tetragonal Pt xFe xCu/C catalysts are made using classical impregnation and subsequent annealing in H 2 methods. The catalysts show up to ∼ 3 times the mass activity of a Pt/C baseline catalyst. According to Rietveld analyses well ordered catalysts of small lattice constants (e.g., a P4/mmm structure of a = 2.733 and c = 3.712 Å) can be prepared. The O 2 reduction reaction (orr) measurements suggest that the catalytic orr activity is higher (up to 190 %) for tetragonal vs. the cubic alloy catalysts. It is not clear if the experimentally observed higher catalytic activities are due to structural differences and/or difference in catalyst particle size. ©The Electrochemical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Chemical Process and Environmental Technology (ICPET-ITPCE)
Peer reviewedYes
NPARC number21271028
Export citationExport as RIS
Report a correctionReport a correction
Record identifier26497196-ea8d-4f70-9179-965591221288
Record created2014-03-24
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)