Ni nanowire supported 3D flower-like Pd nanostructures as an efficient electrocatalyst for electrooxidation of ethanol in alkaline media

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dc.contributor.authorNewcomb, Simon B.
dc.contributor.authorHasan, Maksudul
dc.contributor.authorRohan, James F.
dc.contributor.authorRazeeb, Kafil M.
dc.contributor.funderEnterprise Irelanden
dc.date.accessioned2019-03-21T14:50:04Z
dc.date.available2019-03-21T14:50:04Z
dc.date.issued2012-07-02
dc.date.updated2019-03-21T14:46:10Z
dc.description.abstractA Ni nanowire array (NiNWA) supported three-dimensional flower-like Pd nano-electrocatalyst with high electrocatalytic performance for the electrooxidation of ethanol in alkaline media has been fabricated by borohydride hydrothermal reduction method. This novel hybrid NiNWA/PdNF (nanoflowers) electrocatalyst exhibits large electrochemically active surface area (EASA, 45 m2 g−1(Pd)), excellent electrocatalytic activity (765 mA mg−1(Pd)), and high level of the poisoning tolerance (If/Ib = 1.2) to the carbonaceous oxidative intermediates for the electrooxidation reaction in alkaline media. In addition, the electrochemical stability of NiNWA/PdNF is significantly higher than that of NiNWA/PdNP (nanoparticles) electrocatalyst, as evidenced by chronoamperometry experiments in which the electrooxidation current of nanoflowers is controlled by the diffusion transport of ethanol species rather than the carbonaceous poisoning. This high electrocatalytic activity can be attributed to the more open structure with higher electrochemically active sites and shape of Pd nanoflowers. This is further enhanced by the core support NiNWA with a very large surface area and the open interspaces that ensure easy alcohol access even to remote active sites for fast ion adsorption/desorption.en
dc.description.sponsorshipEnterprise Ireland (Commercialization fund CFTD/2008/322)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationHasan, M., Newcomb, S. B., Rohan, J. F. and Razeeb, K. M. (2012) 'Ni nanowire supported 3D flower-like Pd nanostructures as an efficient electrocatalyst for electrooxidation of ethanol in alkaline media', Journal of Power Sources, 218, pp. 148-156. doi: 10.1016/j.jpowsour.2012.06.017en
dc.identifier.doi10.1016/j.jpowsour.2012.06.017
dc.identifier.endpage156en
dc.identifier.issn0378-7753
dc.identifier.issn0960-1317
dc.identifier.journaltitleJournal of Power Sourcesen
dc.identifier.startpage148en
dc.identifier.urihttps://hdl.handle.net/10468/7657
dc.identifier.volume218en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S0378775312010063
dc.rights© 2012 Elsevier B. V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectPd nanoflowersen
dc.subjectElectrocatalystsen
dc.subjectNanowire arrayen
dc.subjectCatalysisen
dc.subjectDirect ethanol fuel cellsen
dc.subjectAlcohol fuel-cellsen
dc.subjectOxygen-reduction reactionsen
dc.subjectAnion-exchange membranesen
dc.subjectWalled carbon nanotubesen
dc.subjectMethanol oxidationen
dc.subjectCatalytic activityen
dc.subjectAnodic oxidationen
dc.subjectPalladiumen
dc.subjectNanoparticlesen
dc.subjectAciden
dc.titleNi nanowire supported 3D flower-like Pd nanostructures as an efficient electrocatalyst for electrooxidation of ethanol in alkaline mediaen
dc.typeArticle (peer-reviewed)en
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