dc.contributor.author | Ayala, Christian J. | |
dc.contributor.author | Deligoz, Huseyin | |
dc.contributor.author | Gumusoglu, Tolga | |
dc.contributor.author | Yilmazturk, Serpil | |
dc.contributor.author | Erkey, Can | |
dc.contributor.author | Bozbag, Selmi Erim | |
dc.contributor.author | Aindow, Mark | |
dc.date.accessioned | 2021-03-04T13:46:49Z | |
dc.date.available | 2021-03-04T13:46:49Z | |
dc.identifier.citation | Bozbag S. E. , Gumusoglu T., Yilmazturk S., Ayala C. J. , Aindow M., Deligoz H., Erkey C., "Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: Effect of different precursor conversion routes", JOURNAL OF SUPERCRITICAL FLUIDS, cilt.97, ss.154-164, 2015 | |
dc.identifier.issn | 0896-8446 | |
dc.identifier.other | vv_1032021 | |
dc.identifier.other | av_7e29a7c0-d4f3-4e2e-95b3-32df9350d054 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12627/86172 | |
dc.identifier.uri | https://doi.org/10.1016/j.supflu.2014.08.014 | |
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.language.iso | eng | |
dc.subject | Temel Bilimler | |
dc.subject | Mühendislik ve Teknoloji | |
dc.subject | KİMYA, FİZİKSEL | |
dc.subject | Kimya | |
dc.subject | Kimya Mühendisliği ve Teknolojisi | |
dc.subject | Fizikokimya | |
dc.subject | Mühendislik, Bilişim ve Teknoloji (ENG) | |
dc.subject | Mühendislik | |
dc.subject | MÜHENDİSLİK, KİMYASAL | |
dc.subject | Temel Bilimler (SCI) | |
dc.title | Electrochemical performance of fuel cell catalysts prepared by supercritical deposition: Effect of different precursor conversion routes | |
dc.type | Makale | |
dc.relation.journal | JOURNAL OF SUPERCRITICAL FLUIDS | |
dc.contributor.department | Koç Üniversitesi , , | |
dc.identifier.volume | 97 | |
dc.identifier.startpage | 154 | |
dc.identifier.endpage | 164 | |
dc.contributor.firstauthorID | 67115 | |