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

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dc.contributor.author Mavrokefalos, Christos K.
dc.contributor.author Hasan, Maksudul
dc.contributor.author Rohan, James F.
dc.contributor.author Foord, John S.
dc.date.accessioned 2017-12-15T11:49:07Z
dc.date.available 2017-12-15T11:49:07Z
dc.date.issued 2017-11-20
dc.identifier.citation 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 en
dc.identifier.volume 5
dc.identifier.issued 3
dc.identifier.startpage 455
dc.identifier.endpage 463
dc.identifier.issn 2196-0216
dc.identifier.uri http://hdl.handle.net/10468/5179
dc.identifier.doi 10.1002/celc.201701105
dc.description.abstract In 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.sponsorship Irish Research Council (Elevate fellowship ELEVATEPD/2014/15, co-funded by Marie Curie Actions) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher John 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.subject Diamond en
dc.subject Nanoparticles en
dc.subject Fuel cell en
dc.subject Palladium en
dc.subject Nickel en
dc.title Enhanced mass activity and stability of bimetallic Pd-Ni nanoparticles on boron-doped diamond for direct ethanol fuel cell applications en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother James Rohan, Tyndall Microsystems, University College Cork, Cork, Ireland. +353-21-490-3000 Email: james.rohan@tyndall.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 12 months after publication by request of the publisher. en
dc.check.date 2018-11-20
dc.date.updated 2017-11-29T10:43:49Z
dc.description.version Accepted Version en
dc.internal.rssid 419811979
dc.contributor.funder Irish Research Council en
dc.contributor.funder H2020 Marie Skłodowska-Curie Actions en
dc.description.status Peer reviewed en
dc.identifier.journaltitle ChemElectroChem en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress james.rohan@tyndall.ie en


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