Multilayer graphene synthesized using magnetron sputtering for planar supercapacitor application

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DOIResolve DOI: http://doi.org/10.1139/cjc-2014-0297
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TypeArticle
Journal titleCanadian Journal of Chemistry
ISSN0008-4042
Volume93
Pages160164; # of pages: 5
Subjectnanomaterials; graphenes; magnetron sputtering; supercapacitor
AbstractThis study reports the direct preparation of graphene-based films using magnetron sputtering of graphite target. The nanomaterial was deposited at a low temperature of 620 °C on silicon wafers and on metallic foils including aluminum. The films were used in fabrication of supercapacitors with a planar geometry. Electrochemical characterizations demonstrated that the films produced showed nearly ideal electrical capacitive behavior. The maximum capacitance obtained from cyclic voltammetry analysis was 325 F/g for a scan rate of 1 mV/s. The device is capable of delivering an energy density of 13.9 Wh/kg at a very high power density of 50 000 W/kg for ultrafast scan rate of 1000 mV/s. The graphene nanomaterial electrode retains the electrochemical stability over a large number of charge-discharge cycles.
Publication date
LanguageEnglish
AffiliationAutomotive and Surface Transportation; National Research Council Canada
Peer reviewedYes
NPARC number21274805
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Record identifiercbd03d9c-7192-4288-a73d-13fecbe36b71
Record created2015-04-13
Record modified2016-05-09
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