Ti4O7 supported Ru@Pt core-shell catalyst for CO-tolerance in PEM fuel cell hydrogen oxidation reaction

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DOIResolve DOI: http://doi.org/10.1016/j.apenergy.2012.10.017
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TypeArticle
Journal titleApplied Energy
ISSN0306-2619
Volume103
Pages507513; # of pages: 7
SubjectAlloy catalyst; Carbon monoxide tolerance; Core shell structure; Electrochemical measurements; Energy dispersive X-ray spectrometry; High resolution; High-angle annular dark fields; Hydrogen oxidation reaction; Reducing atmosphere; Ruthenium precursors; Scanning transmission electron microscopy; TiO; Electrocatalysts; Electron energy loss spectroscopy; Platinum alloys; Proton exchange membrane fuel cells (PEMFC); Shells (structures); Titanium dioxide; X ray diffraction; Ruthenium alloys; catalysis; catalyst; electrochemical method; irradiance; microwave radiation; pyrolysis
AbstractA new method is developed for synthesizing Ti4O7 supported Ru@Pt core-shell catalyst (Ru@Pt/Ti4O7) through pyrolysis followed by microwave irradiation. The purpose is to improve the Ru durability of PtRu from core-shell structure and strong bonding to Ti4O7 oxide. In this method, the first step is to co-reduce the mixture of ruthenium precursor and TiO2 in a H2 reducing atmosphere under heat-treatment to obtain a Ru core on Ti4O7 support, and the second step is to create a shell of platinum via microwave irradiation. Energy dispersive X-ray spectrometry, X-ray Diffraction, High-resolution Scanning Transmission Electron Microscopy with the high-angle annular dark-field method and Electron Energy-Loss Spectroscopy are used to demonstrate that this catalyst with larger particles has a core-shell structure with a Ru core and a Pt shell. Electrochemical measurements show Ru@Pt/Ti4O7 catalyst has a higher CO-tolerance capability than that of PtRu/C alloy catalyst.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
NPARC number21270364
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Record identifier731129f8-091c-43a0-96b3-79cbab219259
Record created2014-02-05
Record modified2016-05-09
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