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dc.contributor.author Raut, AS
dc.contributor.author Parker, CB
dc.contributor.author Glass, JT
dc.date.accessioned 2011-06-21T17:32:23Z
dc.date.issued 2010-08-01
dc.identifier.citation Journal of Materials Research, 2010, 25 (8), pp. 1500 - 1506
dc.identifier.issn 0884-2914
dc.identifier.uri http://hdl.handle.net/10161/4609
dc.description.abstract Electrochemical double layer capacitors, also referred to as supercapacitors, are a promising technology in the field of energy storage. Carbon nanotube (CNT)-based supercapacitors are particularly interesting because of CNTs' high surface area and conductivity. CNT supercapacitors can potentially be used in hybrid electric vehicles due to their higher power density. Comparing energy storage systems that store energy in different ways, such as batteries, fuel cells, supercapacitors, and flywheels, requires that an appropriate set of performance data be collected. A Ragone plot is a log-log plot of a device's energy density versus power density, giving insight into its operational range. A method to obtain Ragone plots for CNT-based supercapacitors in a three-terminal electrochemical cell was adapted from a technique to test commercial capacitors for electric vehicles. Ragone plots for different types of as-grown CNT electrodes in different electrolytes are presented, along with the procedural details of this new method to obtain electrode-specific energy and power densities. Additionally, a theoretical weight calculation for a carbon nanotube film was derived and validated with a direct weight measurement of a CNT film. This weight was used in the specific energy and power densities for the Ragone plot. © 2010 Materials Research Society.
dc.format.extent 1500 - 1506
dc.language.iso en_US en_US
dc.relation.ispartof Journal of Materials Research
dc.relation.isversionof 10.1557/jmr.2010.0192
dc.title A method to obtain a Ragone plot for evaluation of carbon nanotube supercapacitor electrodes
dc.title.alternative en_US
dc.type Journal Article
dc.description.version Version of Record en_US
duke.date.pubdate 2010-8-0 en_US
duke.description.endpage 1506 en_US
duke.description.issue 8 en_US
duke.description.startpage 1500 en_US
duke.description.volume 25 en_US
dc.relation.journal Journal of Materials Research en_US
pubs.issue 8
pubs.organisational-group /Duke
pubs.organisational-group /Duke/Institutes and Provost's Academic Units
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/Initiatives
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/Initiatives/Duke Science & Society
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/Initiatives/Energy Initiative
pubs.organisational-group /Duke/Pratt School of Engineering
pubs.organisational-group /Duke/Pratt School of Engineering/Electrical and Computer Engineering
pubs.publication-status Published
pubs.volume 25

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