Journal
SYNTHETIC METALS
Volume 161, Issue 17-18, Pages 2049-2054Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2011.04.034
Keywords
Graphene; Nanoplatelets; MnO2 nanoparticles; Supercapacitor
Funding
- University of Waterloo
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In this study, a novel high-performance electrode material based on MnO2 nanoparticles coated onto recently discovered 2-D graphene nanoplatelets was fabricated by a hydrothermal method be used as composite for supercapacitor electrode. The maximum capacitance and energy density obtained for this nanocomposite were 542 F/g and 75.3 Wh/kg at a scan rate of 0.01 V/s in 2 M KCl. These impressive results were attributed to a synergistic effect between GNPs and MnO2 which combine the remarkable electrical conductivity of GNPs with the high pseudocapacitance of the MnO2 nanoparticles. (C) 2011 Elsevier B.V. All rights reserved.
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