The high surface area, high conductivity and mesoporous nature of carbon nano-onions (CNOs) make them a promising carbon precursor for electrode materials in supercapacitors. These hydrophobic materials are functionalized with organic groups and then decorated with RuO2�xH2O nano-particles via precipitation. Homogeneously distributed RuO2�xH2O on the surface of CNOs gives high specific capacitance (345 F/g, 67.5 wt.% RuO2) with high power (197.6 kW/h) and high energy density (47.9 W�h/kg) in aqueous electrolyte (1 M H2SO4). The influences of pH, concentration and additives on the performance of the composites will be reported.

RuO<sub>2</sub>/CNO nano-composites for supercapacitor electrode materials

243rd National Meeting (2012)

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RuO2/CNO nano-composites for supercapacitor electrode materials

RuO₂/CNO nano-composites for supercapacitor electrode materials