Nano Science and Technology Institute
Nanotech 2012 Vol. 3
Nanotech 2012 Vol. 3
Nanotechnology 2012: Bio Sensors, Instruments, Medical, Environment and Energy (Volume 3)
Chapter 8: Energy Storage, Novel Generation & Nano Materials

High Energy Density Supercapacitor Based on a Hybrid Carbon Nanotube - Reduced Graphite Oxide Architecture

Authors:E. Bekyarova, P. Ramesh, N. Jha, M.E. Itkis, R.C. Haddon
Affilation:Carbon Solutions Inc, US
Pages:647 - 650
Keywords:single wall carbon nanotubes, reduced graphite oxide, supercapacitor, synergistic effect energy density
Abstract:We report a high energy supercapacitor device that utilizes hybrid carbon electrodes and the ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF¬4) as an electrolyte. The hybrid electrodes were prepared from reduced graphite oxide (rGO) and purified single walled carbon nanotubes (SWNTs). A simple casting technique gives a hybrid structure with optimum porosity and functionality that provides high energy and power density. The combination of SWNT and rGO in a weight ratio of 1:1 was found to afford specific capacitance of 222 F/g and energy density of 94 Wh/kg at room temperature.
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