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dc.contributor.authorVivekchand, S R C-
dc.contributor.authorRout, Chandra Sekhar-
dc.contributor.authorSubrahmanyam, K S-
dc.contributor.authorGovindaraj, A-
dc.contributor.authorRao, C N R-
dc.date.accessioned2012-02-09T09:45:52Z-
dc.date.available2012-02-09T09:45:52Z-
dc.date.issued2008-01-
dc.identifier0253-4134en_US
dc.identifier.citationJournal of Chemical Sciences 120(1), 9-13 (2008)en_US
dc.identifier.urihttp://hdl.handle.net/10572/361-
dc.description.abstractGraphenes prepared by three different methods have been investigated as electrode materials in electrochemical supercapacitors. The samples prepared by exfoliation of graphitic oxide and by the transformation of nanodiamond exhibit high specific capacitance in aq. H2SO4, the value reaching up to 117 F/g. By using an ionic liquid, the operating voltage has been extended to 3.5 V (instead of 1 V in the case of aq. H2SO4), the specific capacitance and energy density being 75 F/g and 31.9 Wh kg(-1) respectively. This value of the energy density is one of the highest values reported to date. The performance characteristics of the graphenes which are directly related to the quality, in terms of the number of layers and the surface area, are superior to that of single-walled and multi-walled carbon nanotubes.en_US
dc.description.urihttp://dx.doi.org/10.1007/s12039-008-0002-7en_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.rights© 2008 Indian Academy of Sciencesen_US
dc.subjectgraphenesen_US
dc.subjectelectrochemical supercapacitorsen_US
dc.subjectcarbon nanotubesen_US
dc.subjectelectrode materialsen_US
dc.subjectCarbon Nanotube Electrodesen_US
dc.subjectIonic Liquiden_US
dc.subjectCapacitorsen_US
dc.titleGraphene-based electrochemical supercapacitorsen_US
dc.typeArticleen_US
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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