Exfoliation of Graphite Oxide in Propylene Carbonate and Thermal Reduction of the Resulting Graphene Oxide Platelets

Graphite oxide was exfoliated and dispersed in propylene carbonate (PC) by bath sonication. Heating the graphene oxide suspensions at 150 °C significantly reduced the graphene oxide platelets; paper samples comprising such reduced graphene oxide platelets had an electrical conductivity of 5230 S/m....

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Published inACS nano Vol. 4; no. 2; pp. 1227 - 1233
Main Authors Zhu, Yanwu, Stoller, Meryl D, Cai, Weiwei, Velamakanni, Aruna, Piner, Richard D, Chen, David, Ruoff, Rodney S
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 23.02.2010
Subjects
propylene carbonate
graphite oxide
ultracapacitor
characterization
graphene
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Summary:Graphite oxide was exfoliated and dispersed in propylene carbonate (PC) by bath sonication. Heating the graphene oxide suspensions at 150 °C significantly reduced the graphene oxide platelets; paper samples comprising such reduced graphene oxide platelets had an electrical conductivity of 5230 S/m. By adding tetraethylammonium tetrafluoroborate (TEA BF4) to the reduced graphene oxide/PC slurry and making a two-cell ultracapacitor, specific capacitance values of about 120 F/g were obtained.
Bibliography:ObjectType-Article-1
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ISSN:1936-0851
1936-086X
DOI:10.1021/nn901689k