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Proceedings Paper

Preparation and capacitance behavior of nickel oxide-titania nanocomposite
Author(s): Yibing Xie; Chuanjun Huang; Limin Zhou; Haitao Huang; Jian Lu
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Paper Abstract

Titania nanotube array with an average tube diameter of 110 nm and length of 700 nm was fabricated by a potentiostatic anodization on titanium metal sheet. Nickel oxide was then loaded into titania nanotubes by electrodepositon-electrooxidation and heating treatment processes. The morphology and microstructure of the nanocomposite were investigated by field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and energy dispersive x-ray (EDX) analysis. Nickel oxide could well coat on titania nanotubes from inner wall to pore mouth with a high loading amount up to 36.4% of nickel-to-titanium atom ratio. Such a well-defined nickel oxide-titania/titanium nanotubular composite was designed as a functional electrode for an electrochemical capacitance application. The result of electrochemical characterization exhibits a highly reversible redox peaks by cyclic voltammetry in sodium hydroxide aqueous solution. High specific supercapacitance was accordingly achieved up to 7.8 mF cm-2 due to the intensive loading of nickel oxide.

Paper Details

Date Published: 1 November 2007
PDF: 8 pages
Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 642320 (1 November 2007); doi: 10.1117/12.779816
Show Author Affiliations
Yibing Xie, The Hong Kong Polytechnic Univ. (Hong Kong China)
Chuanjun Huang, The Hong Kong Polytechnic Univ. (Hong Kong China)
Limin Zhou, The Hong Kong Polytechnic Univ. (Hong Kong China)
Haitao Huang, The Hong Kong Polytechnic Univ. (Hong Kong China)
Jian Lu, The Hong Kong Polytechnic Univ. (Hong Kong China)


Published in SPIE Proceedings Vol. 6423:
International Conference on Smart Materials and Nanotechnology in Engineering

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