Publication: Pt-based electrocatalysts for polymer electrolyte membrane fuel cells prepared by supercritical deposition technique
dc.contributor.coauthor | Bayrakceken, Ayse | |
dc.contributor.coauthor | Smirnova, Alevtina | |
dc.contributor.coauthor | Kitkamthorn, Usanee | |
dc.contributor.coauthor | Aindow, Mark | |
dc.contributor.coauthor | Turker, Lemi | |
dc.contributor.coauthor | Eroglu, Inci | |
dc.contributor.department | Department of Chemical and Biological Engineering | |
dc.contributor.kuauthor | Erkey, Can | |
dc.contributor.schoolcollegeinstitute | College of Engineering | |
dc.date.accessioned | 2024-11-10T00:02:46Z | |
dc.date.issued | 2008 | |
dc.description.abstract | Pt-based electrocatalysts were prepared on different carbon supports which are multiwall carbon nanotubes (MWCNTs), Vulcan XC 72R (VXR) and black pearl 2000 (BP2000) using a supercritical carbon dioxide (ScCO2) deposition technique. These catalysts were characterized by using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM) and cyclic voltammetry (CV). XRD and HRTEM results demonstrated that the ScCO2 deposition technique enables a high surface area metal phase to be deposited, with the size of the Pt particles ranging from 1 to 2 nm. The electrochemical surface areas (ESAs) of the prepared electrocatalysts were compared to the surface areas of commercial ETEK Pt/C (10 wt% Pt) and Tanaka Pt/C (46.5 wt% Pt) catalysts. The CV data indicate that the ESAs of the prepared Pt/VXR and Pt/MWCNT catalysts are about three times larger than that of the commercial ETEK catalyst for similar (10 wt% Pt) loadings. Oxygen reduction activity was investigated by hydrodynamic voltammetry. From the slope of Koutecky-Levich plots, the average number of electrons transferred in the oxygen reduction reaction (ORR) was 3.5, 3.6 and 3.7 for Pt/BP2000, Pt/VXR and Pt/MWCNT, correspondingly, which indicated almost complete reduction of oxygen to water. (C) 2008 Published by Elsevier B.V. | |
dc.description.indexedby | WOS | |
dc.description.indexedby | Scopus | |
dc.description.issue | 2 | |
dc.description.openaccess | NO | |
dc.description.sponsoredbyTubitakEu | N/A | |
dc.description.volume | 179 | |
dc.identifier.doi | 10.1016/j.jpowsour.2007.12.086 | |
dc.identifier.eissn | 1873-2755 | |
dc.identifier.issn | 0378-7753 | |
dc.identifier.scopus | 2-s2.0-40749115589 | |
dc.identifier.uri | https://doi.org/10.1016/j.jpowsour.2007.12.086 | |
dc.identifier.uri | https://hdl.handle.net/20.500.14288/16195 | |
dc.identifier.wos | 255299900012 | |
dc.keywords | supercritical carbon dioxide deposition | |
dc.keywords | electrocatalyst | |
dc.keywords | carbon | |
dc.keywords | polymer electrolyte membrane fuel cell | |
dc.keywords | platinum | |
dc.keywords | Platinum-based electrocatalysts | |
dc.keywords | Oxygen reduction reaction | |
dc.keywords | Supported catalysts | |
dc.keywords | Carbon nanotubes | |
dc.keywords | Electrochemical reduction | |
dc.keywords | Aerogel nanocomposites | |
dc.keywords | Nanoparticles | |
dc.keywords | Performance | |
dc.keywords | Methanol | |
dc.keywords | Cathode | |
dc.language.iso | eng | |
dc.publisher | Elsevier | |
dc.relation.ispartof | Journal of Power Sources | |
dc.subject | Chemistry | |
dc.subject | Physical | |
dc.subject | Electrochemistry | |
dc.subject | Energy | |
dc.subject | Fuels | |
dc.subject | Materials science | |
dc.title | Pt-based electrocatalysts for polymer electrolyte membrane fuel cells prepared by supercritical deposition technique | |
dc.type | Journal Article | |
dspace.entity.type | Publication | |
local.contributor.kuauthor | Erkey, Can | |
local.publication.orgunit1 | College of Engineering | |
local.publication.orgunit2 | Department of Chemical and Biological Engineering | |
relation.isOrgUnitOfPublication | c747a256-6e0c-4969-b1bf-3b9f2f674289 | |
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