Publication:
Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: effect of different precursor conversion routes

dc.contributor.coauthorGümüşoğlu, Tolga
dc.contributor.coauthorYılmaztürk, Serpil
dc.contributor.coauthorAyala, Christian J.
dc.contributor.coauthorAindow, Mark
dc.contributor.coauthorDeligöz, Hüseyin
dc.contributor.departmentDepartment of Chemical and Biological Engineering
dc.contributor.departmentKUTEM (Koç University Tüpraş Energy Center)
dc.contributor.kuauthorBozbağ, Selmi Erim
dc.contributor.kuauthorErkey, Can
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteResearch Center
dc.date.accessioned2024-11-09T23:43:01Z
dc.date.issued2015
dc.description.abstractSupercritical deposition (SCD) is used to prepare carbon-supported Pt nanoparticles as electrocatalysts for proton exchange membrane fuel cells (PEMFCs). Dimethyl(1,5-cyclooctadiene)platinum(II) (Pt(cod)me(2)) is adsorbed from supercritical carbon dioxide (scCO(2)) solutions onto Vulcan VX-72 at 13.2 MPa and 50 degrees C. The adsorbed metal precursor is converted to its metal form via three different routes: thermal conversion in N-2 at ambient pressure (route 1), thermal conversion in scCO(2) (route 2), or chemical conversion in H-2 at ambient pressure (route 3). Sequential SCD is used in routes 1 and 3. The mean diameters of the synthesized Pt nanoparticles are smallest for route 1 and largest for route 3. Nano-scale morphology of the electrocatalysts is characterized using transmission electron microscopy (TEM), revealing narrower Pt particle size distributions for the catalyst prepared via route 1 than for those synthesized by routes 2 and 3. Electrocatalyst prepared using route 1 showed the best performance both in specific activity (measured via cyclic voltammetry) and in PEMFC tests among electrocatalysts prepared using different routes. (C) 2014 Elsevier B.V. All rights reserved.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipKoc University Tupras Energy Center (KUTEM) We are grateful for the support of Koc University Tupras Energy Center (KUTEM).
dc.description.volume97
dc.identifier.doi10.1016/j.supflu.2014.08.014
dc.identifier.eissn1872-8162
dc.identifier.issn0896-8446
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-84920713708
dc.identifier.urihttps://doi.org/10.1016/j.supflu.2014.08.014
dc.identifier.urihttps://hdl.handle.net/20.500.14288/13422
dc.identifier.wos348952800019
dc.keywordsSupercritical Deposition
dc.keywordsPlatinum
dc.keywordsNanoparticles
dc.keywordsCyclic Voltammetry
dc.keywordsFuel Cell Oxygen Reduction Reaction
dc.keywordsPlatininum Nanoparticles
dc.keywordsCarbon Nanotubes
dc.keywordsAerogel Nanocomposites
dc.keywordsElectrocatalysts
dc.keywordsMethanol
dc.keywordsSize
dc.keywordsAasorption
dc.keywordsCO2
dc.keywordsComposites
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofJournal of Supercritical Fluids
dc.subjectChemistry
dc.subjectPhysical
dc.subjectEngineering
dc.subjectChemical engineering
dc.titleElectrochemical performance of fuel cell catalysts prepared by supercritical deposition: effect of different precursor conversion routes
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorBozbağ, Selmi Erim
local.contributor.kuauthorErkey, Can
local.publication.orgunit1College of Engineering
local.publication.orgunit1Research Center
local.publication.orgunit2Department of Chemical and Biological Engineering
local.publication.orgunit2KUTEM (Koç University Tüpraş Energy Center)
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