Highly active platinum nanoparticles supported by nitrogen/sulfur functionalized graphene composite for ethanol electro-oxidation

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Kanninen, Petri
dc.contributor.author Nguyen Dang, Luong
dc.contributor.author Sinh, Le Hoang
dc.contributor.author Flórez-Montaño, Jonathan
dc.contributor.author Jiang, Hua
dc.contributor.author Pastor, Elena
dc.contributor.author Seppälä, Jukka
dc.contributor.author Kallio, Tanja
dc.date.accessioned 2017-08-03T12:10:34Z
dc.date.available 2017-08-03T12:10:34Z
dc.date.issued 2017-07-10
dc.identifier.citation Kanninen , P , Nguyen Dang , L , Sinh , L H , Flórez-Montaño , J , Jiang , H , Pastor , E , Seppälä , J & Kallio , T 2017 , ' Highly active platinum nanoparticles supported by nitrogen/sulfur functionalized graphene composite for ethanol electro-oxidation ' Electrochimica Acta , vol 242 , pp. 315-326 . DOI: 10.1016/j.electacta.2017.05.019 en
dc.identifier.issn 0013-4686
dc.identifier.issn 1873-3859
dc.identifier.other PURE UUID: c515d619-549b-4073-bf71-2d838657fc46
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/highly-active-platinum-nanoparticles-supported-by-nitrogensulfur-functionalized-graphene-composite-for-ethanol-electrooxidation(c515d619-549b-4073-bf71-2d838657fc46).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85019239998&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/14149400/Kanninen_EA_2017.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/27421
dc.description.abstract In this study, Pt nanoparticles are deposited on the surface of nitrogen-sulfur functionalized reduced graphene oxide and mixed with double wall carbon nanotubes (Pt/NS-rGO/DWCNT). The obtained nanocomposite is used as an electrocatalyst for the ethanol electro-oxidation reaction (EOR). CO oxidation studies with differential electrochemical mass spectroscopy (DEMS) show a lower onset potential indicating higher poisoning tolerance of these materials. The electrocatalytic activity of the Pt/NS-rGO/DWCNT nanocomposite is studied at different temperatures (40, 50, 60, and 70 °C) and compared with that of Pt/rGO, Pt/rGO/DWCNT composites and commercial carbon-supported Pt catalyst. Pt/rGO/DWCNT and Pt/NS-rGO/DWCNT display significantly higher ethanol electro-oxidation currents especially at low potentials relevant to fuel cell applications. At high temperatures (>50 °C), Pt/NS-rGO/DWCNT is the most active catalyst in concordance with its higher apparent activation energy. Pt/NS-rGO/DWCNT is also the most durable of the catalysts after a 500 potential cycle test and suffers the least from poisoning effects during chronopotentiometric testing. These results allow to conclude that combining NS-functionalized graphene catalyst support with DWCNT to form a composite provides excellent performances due to enhanced Pt electrocatalytic activity from NS-functionalization and enhanced mass transfer from the DWCNT filler. en
dc.format.extent 12
dc.format.extent 315-326
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Electrochimica Acta en
dc.relation.ispartofseries Volume 242 en
dc.rights openAccess en
dc.subject.other Chemical Engineering(all) en
dc.subject.other Electrochemistry en
dc.subject.other 116 Chemical sciences en
dc.title Highly active platinum nanoparticles supported by nitrogen/sulfur functionalized graphene composite for ethanol electro-oxidation en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Chemistry and Materials Science
dc.contributor.department Department of Biotechnology and Chemical Technology
dc.contributor.department Duy Tan University
dc.contributor.department University of La Laguna
dc.contributor.department Department of Applied Physics
dc.contributor.department Department of Chemical and Metallurgical Engineering
dc.subject.keyword carbon nanotube
dc.subject.keyword ethanol electro-oxidation
dc.subject.keyword Graphene
dc.subject.keyword nitrogen sulfur functionalization
dc.subject.keyword platinum nanoparticles
dc.subject.keyword Chemical Engineering(all)
dc.subject.keyword Electrochemistry
dc.subject.keyword 116 Chemical sciences
dc.identifier.urn URN:NBN:fi:aalto-201708036389
dc.identifier.doi 10.1016/j.electacta.2017.05.019
dc.date.embargo info:eu-repo/date/embargoEnd/2019-05-15

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