Technical Proceedings of the 2012 Clean Technology Conference and Trade Show

Cleantech 2012

Chapter 5: Energy Storage & Novel Generation

Authors:
E. Bekyarova, P. Ramesh, N. Jha, M.E. Itkis, R.C. Haddon
Affilation:
Carbon Solutions Inc, US
Pages:
219 - 222
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.
High Energy Density Supercapacitor Based on a Hybrid Carbon Nanotube - Reduced Graphite Oxide Architecture
ISBN:
978-1-4665-6277-6
Pages:
440