Bulletin of the Chemical Society of Japan p. 1813 - 1816 (2000)
Update date:2022-08-11
Topics:
Ma
Wei
Xu
Liang
Wu
Carbon nanotubes were refluxed with nitric acid to create acid sites on the surface. After such treatment, amorphous or nano-scale crystalline RuO2·χH2O can be adhered to the surfaces of carbon nanotubes by a simple method. RuO2·χH2O became more amorphous with decreasing the fraction of carbon nanotubes. The capacitance can be enhanced significantly by the adherence. When the weight fraction of RuO2·χH2O in the composite electrodes reached 75%, a specific capacitance of 560 Fg-1 was achieved. On the other hand, carbon nanotubes/RuO2·χH2O capacitors exhibit excellent power delivery behavior. So the processing of carbon nanotubes/RuO2·χH2O composite electrodes is a new attempt to fabricate supercapacitors with both high energy and high power density.
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