J Mater Sci Technol ›› 2005, Vol. 21 ›› Issue (03): 292-296.

• Research Articles • Previous Articles     Next Articles

Nickel Oxide/Carbon Nanotubes Nanocomposite for Electrochemical Capacitance

Kui LIANG, Kayhyeok AN, Younghee LEE   

  1. College of Materials Science and Engineering, Hunan University, Changsha 410082, China...
  • Received:2004-03-22 Revised:2004-07-29 Online:2005-05-28 Published:2009-10-10
  • Contact: Kui LIANG

Abstract: A nanocomposite of nickel oxide/carbon nanotubes was prepared through a simple chemical precipitation followed by thermal annealing. The electrochemical capacitance of this electrode material was studied. When the mass fraction of CNTs (carbon nanotubes) in NiO/CNT composites increases, the electrical resistivity of nanocomposites decreases and becomes similar to that of pure CNTs when it reaches 30%. The specific surface area of composites increases with increasing CNT mass fraction and the specific capacitance reaches 160 F/g under 10 mA/g discharge current density at CNT mass fraction of 10%.

Key words: Nickel oxide, Carbon nanotubes, Nanocomposite, Electrochemical capacitance