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Electrochemical characterization of carbon nanotubes as electrode in electrochemical double-layer capacitors

Tipo de material: TextoTextoSeries ; Carbon, 40, p.1193-1197, 2002Trabajos contenidos:
  • Chen, J.H
  • Li, W.Z
  • Wang, D. Z
  • Yang, S. X
  • Wen, J.G
  • Ren, Z. F
Tema(s): Recursos en línea: Resumen: Carbon nanotubes uniformly 50 nm in diameter were directly grown on graphite foil. Cyclic voltammetry (CV)shows that the carbon nanotube/ graphite foil electrode has a high specific capacitance (115.7 F/g at a scan rate of 100 mV/ s)and exhibits typical double-layer behavior. A rectangular-shaped CV curve persists even at a scan rate of 100 mV/ s in 1.0 M H SO aqueous solution, which suggests that the carbon nanotube electrode could be an excellent candidate as the electrode 2 4 in electrochemical double-layer capacitors. In addition, the influence of the potential scan rate, aging, and the electrolyte solution on the specific capacitance of nanotube electrodes was also studied.
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Carbon nanotubes uniformly 50 nm in diameter were directly grown on graphite foil. Cyclic voltammetry (CV)shows that the carbon nanotube/ graphite foil electrode has a high specific capacitance (115.7 F/g at a scan rate of 100 mV/ s)and exhibits typical double-layer behavior. A rectangular-shaped CV curve persists even at a scan rate of 100 mV/ s in 1.0 M H SO aqueous solution, which suggests that the carbon nanotube electrode could be an excellent candidate as the electrode 2 4 in electrochemical double-layer capacitors. In addition, the influence of the potential scan rate, aging, and the electrolyte solution on the specific capacitance of nanotube electrodes was also studied.

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