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dc.contributor.authorElbaz, Lior
dc.contributor.authorPhillips, Jonathan
dc.contributor.authorArtyushkova, Kateryna
dc.contributor.authorMore, Karren
dc.contributor.authorBrosha, Eric L.
dc.dateJuly 3, 2015
dc.date.accessioned2016-08-15T17:22:51Z
dc.date.available2016-08-15T17:22:51Z
dc.date.issued2015-07-03
dc.identifier.citationElbaz, Lior, et al. "Evidence of High Electrocatalytic Activity of Molybdenum Carbide Supported Platinum Nanorafts." Journal of The Electrochemical Society 162.9 (2015): H681-H685.
dc.identifier.urihttp://hdl.handle.net/10945/49626
dc.descriptionThe article of record as published may be found at http://dx.doi.org/10.1149/2.0991509jes
dc.descriptionThis was Paper 614 presented at the Orlando, Florida, Meeting of the Society, May 11–15, 2014.
dc.description.abstractA remarkable new supported metal catalyst structure on Mo₂C substrates, ‘rafts’ of platinum consisting of less than 6 atoms, was synthesized and found to be catalytically active electrocatalyst for oxygen reduction. A novel catalytic synthesis method: Reduction- Expansion-Synthesis of Catalysts (RES-C), from rapid heating of dry mixture of solid precursors of molybdenum, platinum and urea in an inert gas environment, led to the creation of unique platinum Nanorafts on Mo₂C. The Pt Nanorafts offer a complete utilization of the Pt atoms for electrocatalysis with no “hidden” atoms. This structure is strongly affected by its interaction with the substrate as was observed by XPS. In this work, we show for the first time, evidence of electrocatalytic activity with such small clusters of non-crystalline Pt atoms as catalysts for oxygen reduction. Electrochemical half-cell characterization shows that this structure permit more efficient utilization of platinum, with mass activity conservatively measured to be 50% that of platinum particles generated using traditional approaches. Moreover, as cathode fuel cell catalysts, these novel material may dramatically enhance stability, relative to the commercial Pt/carbon catalysts.
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleEvidence of High Electrocatalytic Activity of Molybdenum Carbide Supported Platinum Nanoraftsen_US
dc.typeArticleen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)en_US
dc.description.funderU.S. Department of Energy Fuel Cell Technologies Office
dc.description.funderIsrael Ministry of Defense (MAFAT)
dcterms.publisherThe Electrochemical Society


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