High oxygen reduction activity of few-walled carbon nanotubes with low nitrogen content

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorBorghei, M.en_US
dc.contributor.authorKanninen, Petrien_US
dc.contributor.authorLundahl, M.en_US
dc.contributor.authorSusi, T.en_US
dc.contributor.authorSainio, J.en_US
dc.contributor.authorAnoshkin, I.en_US
dc.contributor.authorNasibulin, A.en_US
dc.contributor.authorKallio, Tanjaen_US
dc.contributor.authorTammeveski, K.en_US
dc.contributor.authorKauppinen, E.en_US
dc.contributor.authorRuiz, V.en_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.departmentDepartment of Chemistryen
dc.contributor.groupauthorSurface Scienceen
dc.date.accessioned2017-08-03T12:10:22Z
dc.date.available2017-08-03T12:10:22Z
dc.date.issued2014-10en_US
dc.description.abstractNitrogen-containing few-walled carbon nanotubes (N-FWCNTs) with very low nitrogen content (0.56 at.%) were obtained by a process involving the coating of acid functionalized FWCNTs with polyaniline (PANI) followed by pyrolysis at high temperatures. The resulting N-FWCNTs exhibited a remarkable electrocatalytic activity for the oxygen reduction reaction (ORR), despite significantly lower nitrogen content than previously reported in literature. The N-FWCNTs performed on par or better than Pt-C in the cathode of an alkaline direct methanol fuel cell, corroborating the ORR activity observed in the electrochemical cell and exhibiting a higher methanol tolerance. Interestingly, N-FWCNTs showed a high activity for the hydrogen evolution reaction and for the hydrogen peroxide decomposition, suggesting that the active sites involved in ORR can simultaneously catalyze other reactions. This unprecedentedly high activity for such a low Ncontent can be explained by the exceptional accessibility for the catalytic sites located in open and porous N-doped layer surrounding the FWCNT core, along with the minimization of inactive inner volume and mass compared to larger nitrogen doped multiwalled tubes.en
dc.description.versionPeer revieweden
dc.format.extent9
dc.format.extent233-241
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationBorghei, M, Kanninen, P, Lundahl, M, Susi, T, Sainio, J, Anoshkin, I, Nasibulin, A, Kallio, T, Tammeveski, K, Kauppinen, E & Ruiz, V 2014, ' High oxygen reduction activity of few-walled carbon nanotubes with low nitrogen content ', Applied Catalysis B-Environmental, vol. 158-159, pp. 233-241 . https://doi.org/10.1016/j.apcatb.2014.04.027en
dc.identifier.doi10.1016/j.apcatb.2014.04.027en_US
dc.identifier.issn0926-3373
dc.identifier.issn1873-3883
dc.identifier.otherPURE UUID: bad70aa2-481b-47de-8271-3855068c0883en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/bad70aa2-481b-47de-8271-3855068c0883en_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/14102477/Manuscript_AppCatB_Maryam_2014.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/27416
dc.identifier.urnURN:NBN:fi:aalto-201708036384
dc.language.isoenen
dc.relation.ispartofseriesAPPLIED CATALYSIS B-ENVIRONMENTALen
dc.relation.ispartofseriesVolume 158-159en
dc.rightsopenAccessen
dc.subject.keywordAlkaline fuel cellen_US
dc.subject.keywordFew-walled carbon nanotubesen_US
dc.subject.keywordNitrogen-dopeden_US
dc.subject.keywordOxygen reduction reactionen_US
dc.titleHigh oxygen reduction activity of few-walled carbon nanotubes with low nitrogen contenten
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionacceptedVersion
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