Journal
ACS NANO
Volume 4, Issue 2, Pages 1227-1233Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn901689k
Keywords
graphene; graphite oxide; propylene carbonate; ultracapacitor; characterization
Categories
Funding
- Graphene Energy, Inc.
- DoE [DE-SC001951]
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Graphite oxide was exfoliated and dispersed in propylene carbonate (PC) by bath sonication. Heating the graphene oxide suspensions at 150 degrees 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.
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