Enhanced mass activity and stability of bimetallic Pd-Ni nanoparticles on boron-doped diamond for direct ethanol fuel cell applications

dc.check.date2018-11-20
dc.check.infoAccess to this article is restricted until 12 months after publication by request of the publisher.en
dc.contributor.authorMavrokefalos, Christos K.
dc.contributor.authorHasan, Maksudul
dc.contributor.authorRohan, James F.
dc.contributor.authorFoord, John S.
dc.contributor.funderIrish Research Councilen
dc.contributor.funderH2020 Marie Skłodowska-Curie Actionsen
dc.date.accessioned2017-12-15T11:49:07Z
dc.date.available2017-12-15T11:49:07Z
dc.date.issued2017-11-20
dc.date.updated2017-11-29T10:43:49Z
dc.description.abstractIn this work, electrochemical deposition of Pd (palladium) and bimetallic Pd-Ni (nickel) nanoparticles on oxygen-terminated boron-doped diamond (BDD) substrate is described for use as electrocatalyst in direct ethanol fuel cell. A potentiostatic two-step electrochemical method involving the electrodeposition of Ni nanoparticles on BDD followed by mono-dispersed Pd nanoparticles was used for the fabrication of Pd-Ni/BDD electrode. The electrocatalytic activity of the bimetallic Pd-Ni nanoparticles was evaluated in an alkaline solution containing ethanol and compared to that of the Pd nanoparticles alone. The bimetallic Pd-Ni nanoparticles showed 2.4 times higher mass activity than the similar systems from literature as well as stability when operated in alkaline media. Higher electrochemical response towards the electrooxidation of ethanol observed for the bimetallic electrocatalysts was due to the synergistic effects of the electron interaction at the interface of the two metals. Chronopotentiometric measurements revealed that Pd is more stable when anchored to the Ni nanoparticles. The optimised loading of mono-dispersed Pd on a foreign Ni metal as nanoparticles plays a crucial role in achieving a high mass (3.63 x 106 mA/g) and specific (10.53 mA/cm2) electrocatalytic activity of Pd towards ethanol electrooxidation in alkaline media.en
dc.description.sponsorshipIrish Research Council (Elevate fellowship ELEVATEPD/2014/15, co-funded by Marie Curie Actions)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMavrokefalos, C. K., Hasan, M., Rohan, J. F. and Foord, J. S. (2017) ‘Enhanced mass activity and stability of bimetallic Pd-Ni nanoparticles on boron-doped diamond for direct ethanol fuel cell applications’, ChemElectroChem, 5(3), pp. 455-463. doi:10.1002/celc.201701105en
dc.identifier.doi10.1002/celc.201701105
dc.identifier.endpage463
dc.identifier.issn2196-0216
dc.identifier.issued3
dc.identifier.journaltitleChemElectroChemen
dc.identifier.startpage455
dc.identifier.urihttps://hdl.handle.net/10468/5179
dc.identifier.volume5
dc.language.isoenen
dc.publisherJohn Wiley & Sons, Inc.en
dc.rights© 2017, John Wiley & Sons, Inc. This is the peer reviewed version of the following article: Mavrokefalos, C. K., Hasan, M., Rohan, J. F. and Foord, J. S. (2017) ‘Enhanced mass activity and stability of bimetallic Pd-Ni nanoparticles on boron-doped diamond for direct ethanol fuel cell applications’, ChemElectroChem, 5(3), pp. 455-463, doi:10.1002/celc.201701105. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.en
dc.subjectDiamonden
dc.subjectNanoparticlesen
dc.subjectFuel cellen
dc.subjectPalladiumen
dc.subjectNickelen
dc.titleEnhanced mass activity and stability of bimetallic Pd-Ni nanoparticles on boron-doped diamond for direct ethanol fuel cell applicationsen
dc.typeArticle (peer-reviewed)en
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