Publication: Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: effect of different precursor conversion routes
dc.contributor.coauthor | Gümüşoğlu, Tolga | |
dc.contributor.coauthor | Yılmaztürk, Serpil | |
dc.contributor.coauthor | Ayala, Christian J. | |
dc.contributor.coauthor | Aindow, Mark | |
dc.contributor.coauthor | Deligöz, Hüseyin | |
dc.contributor.department | Department of Chemical and Biological Engineering | |
dc.contributor.department | KUTEM (Koç University Tüpraş Energy Center) | |
dc.contributor.kuauthor | Bozbağ, Selmi Erim | |
dc.contributor.kuauthor | Erkey, Can | |
dc.contributor.schoolcollegeinstitute | College of Engineering | |
dc.contributor.schoolcollegeinstitute | Research Center | |
dc.date.accessioned | 2024-11-09T23:43:01Z | |
dc.date.issued | 2015 | |
dc.description.abstract | Supercritical 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.indexedby | WOS | |
dc.description.indexedby | Scopus | |
dc.description.openaccess | NO | |
dc.description.publisherscope | International | |
dc.description.sponsoredbyTubitakEu | N/A | |
dc.description.sponsorship | Koc University Tupras Energy Center (KUTEM) We are grateful for the support of Koc University Tupras Energy Center (KUTEM). | |
dc.description.volume | 97 | |
dc.identifier.doi | 10.1016/j.supflu.2014.08.014 | |
dc.identifier.eissn | 1872-8162 | |
dc.identifier.issn | 0896-8446 | |
dc.identifier.quartile | Q2 | |
dc.identifier.scopus | 2-s2.0-84920713708 | |
dc.identifier.uri | https://doi.org/10.1016/j.supflu.2014.08.014 | |
dc.identifier.uri | https://hdl.handle.net/20.500.14288/13422 | |
dc.identifier.wos | 348952800019 | |
dc.keywords | Supercritical Deposition | |
dc.keywords | Platinum | |
dc.keywords | Nanoparticles | |
dc.keywords | Cyclic Voltammetry | |
dc.keywords | Fuel Cell Oxygen Reduction Reaction | |
dc.keywords | Platininum Nanoparticles | |
dc.keywords | Carbon Nanotubes | |
dc.keywords | Aerogel Nanocomposites | |
dc.keywords | Electrocatalysts | |
dc.keywords | Methanol | |
dc.keywords | Size | |
dc.keywords | Aasorption | |
dc.keywords | CO2 | |
dc.keywords | Composites | |
dc.language.iso | eng | |
dc.publisher | Elsevier | |
dc.relation.ispartof | Journal of Supercritical Fluids | |
dc.subject | Chemistry | |
dc.subject | Physical | |
dc.subject | Engineering | |
dc.subject | Chemical engineering | |
dc.title | Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: effect of different precursor conversion routes | |
dc.type | Journal Article | |
dspace.entity.type | Publication | |
local.contributor.kuauthor | Bozbağ, Selmi Erim | |
local.contributor.kuauthor | Erkey, Can | |
local.publication.orgunit1 | College of Engineering | |
local.publication.orgunit1 | Research Center | |
local.publication.orgunit2 | Department of Chemical and Biological Engineering | |
local.publication.orgunit2 | KUTEM (Koç University Tüpraş Energy Center) | |
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