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dc.contributor.authorOdedairo, Taiwo
dc.contributor.authorYan, Xuecheng
dc.contributor.authorGao, Guoping
dc.contributor.authorYao, Xiangdong
dc.contributor.authorDu, Aijun
dc.contributor.authorZhu, Zhonghua
dc.date.accessioned2018-09-10T23:43:18Z
dc.date.available2018-09-10T23:43:18Z
dc.date.issued2016
dc.identifier.issn0008-6223
dc.identifier.doi10.1016/j.carbon.2016.06.080
dc.identifier.urihttp://hdl.handle.net/10072/99849
dc.description.abstractIdentifying catalytically active sites in graphene-based catalysts is critical to improved oxygen reduction reaction (ORR) electrocatalysts for fuel-cell applications. To generate abundant active edge sites on graphene-based electrocatalysts for superior electrocatalytic activity, rather than at their basal plane, has been a challenge. A new type of ORR electrocatalyst produced using fluidization process and based on a three-dimensional hybrid consisting of horizontally-aligned carbon nanotube and graphene (CNT-G), featured abundant active edge sites and a large specific surface area (863 m2 g−1). The Pt-doped CNT-G exhibited an increase of about 55% in mass activity over the state-of-the-art commercial Pt/C and about 164% over Pt/N-graphene in acidic medium, and approximately 54% increase in kinetic limiting current than the Pt/C at low overpotential in alkaline medium. The higher mass activity indicates that less Pt is required for the same performance, reducing the cost of fuel cell electrocatalyst. In hydrogen evolution reaction (HER), both the metal-free CNT-G and Pt/CNT-G exhibited superior electrocatalytic activity compared to N-doped graphene and commercial Pt/C, respectively.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom739
dc.relation.ispartofpageto746
dc.relation.ispartofjournalCarbon
dc.relation.ispartofvolume107
dc.subject.fieldofresearchChemical Sciences not elsewhere classified
dc.subject.fieldofresearchPhysical Sciences
dc.subject.fieldofresearchChemical Sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode039999
dc.subject.fieldofresearchcode02
dc.subject.fieldofresearchcode03
dc.subject.fieldofresearchcode09
dc.titleBoosting oxygen reduction and hydrogen evolution at the edge sites of a web-like carbon nanotube-graphene hybrid
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorYao, Xiangdong
gro.griffith.authorYan, Xuecheng


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