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dc.contributor.authorCOLEMAN, JONATHANen
dc.contributor.authorBERNER, NINAen
dc.contributor.authorDUESBERG, GEORGen
dc.contributor.authorNICOLOSI, VALERIAen
dc.contributor.authorMCEVOY, NIALLen
dc.date.accessioned2015-05-19T14:51:49Z
dc.date.available2015-05-19T14:51:49Z
dc.date.issued2014en
dc.date.submitted2014en
dc.identifier.citationHiggins, T.M. McAteer, D. Coelho, J.C.M. Sanchez, B.M. Gholamvand, Z. Moriarty, G. McEvoy, N. Berner, N.C. Duesberg, G.S. Nicolosi, V. Coleman, J.N., Effect of percolation on the capacitance of supercapacitor electrodes prepared from composites of manganese dioxide nanoplatelets and carbon nanotubes, ACS Nano, 8, 9, 2014, 9567 - 9579en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/73944
dc.description.abstractHere we demonstrate significant improvements in the performance of supercapacitor electrodes based on 2D MnO2 nano-platelets by the addition of carbon nanotubes. Electrodes based on MnO2 nano-platelets do not display high areal capacitance because the electrical properties of such films are poor, limiting the transport of charge between redox sites and the external circuit. In addition, the mechanical strength is low, limiting the achievable electrode thickness, even in the presence of binders. By adding carbon nanotubes to the MnO2-based electrodes, we have increased the conductivity by up to eight orders of magnitude, in line with percolation theory. The nanotube network facilitates charge transport, resulting in large increases in capacitance, especially at high rates, around 1 V/s. The increase in MnO2 specific capacitance scaled with nanotube content in a manner fully consistent with percolation theory. Importantly, the mechanical robustness was significantly enhanced, allowing the fabrication of electrodes that were 10 times thicker than could be achieved in MnO2-only films. This resulted in composite films with areal capacitances up to 40 times higher than could be achieved with MnO2-only electrodes.en
dc.format.extent9567en
dc.format.extent9579en
dc.relation.ispartofseriesACS Nanoen
dc.relation.ispartofseries8en
dc.relation.ispartofseries9en
dc.rightsYen
dc.subjectSupercapacitor, percolation, capacitance, nanotube, manganese dioxide, carbon nanotube composite, electrode, thin filmen
dc.subject.lcshSupercapacitor, percolation, capacitance, nanotube, manganese dioxide, carbon nanotube composite, electrode, thin filmen
dc.titleEffect of percolation on the capacitance of supercapacitor electrodes prepared from composites of manganese dioxide nanoplatelets and carbon nanotubesen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/colemajen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/duesbergen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/nicoloven
dc.identifier.peoplefinderurlhttp://people.tcd.ie/mcevoynien
dc.identifier.peoplefinderurlhttp://people.tcd.ie/nberneren
dc.identifier.rssinternalid102253en
dc.identifier.doihttp://dx.doi.org/10.1021/nn5038543en
dc.rights.ecaccessrightsopenAccess
dc.identifier.rssurihttp://www.scopus.com/inward/record.url?eid=2-s2.0-84920015143&partnerID=40&md5=05f54366fcc83854c507ee8ca8e6b8faen


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