PREPARATION OF NICKEL OXIDE EMBEDDED SELF ORGANIZED TITANIA NANOTUBES ARRAY BY NEW ALGINATE METHOD AS A SUPERCAPACITOR ELECTRODE

Habibeh Hadad Dabaghi (), Mahmood Kazemzad (), Yadolah Ganjkhanlou () and Rahmatollah Eskandari ()
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Habibeh Hadad Dabaghi: Department of Science, Karaj Branch, Islamic Azad University, P.O. Box 31485-313, Karaj, Iran
Mahmood Kazemzad: Materials and Energy Research Center, P.O. Box 14155-4777, Tehran, Iran
Yadolah Ganjkhanlou: Materials and Energy Research Center, P.O. Box 14155-4777, Tehran, Iran
Rahmatollah Eskandari: Department of Physics and Advanced Materials, Research Institute, University of New Orleans, New Orleans, LA 70148, USA

Surface Review and Letters (SRL), 2013, vol. 20, issue 06, 1-6

Abstract: Potentiostatic two step anodizing of titanium utilized for preparation of self organized titania nanotubes arrays with diameter of 150 nm. Then the new alginate method has been applied for incorporation ofNiOinto the nanotubes. The prepared hybrid materials have been characterized by various methods including field emission scanning electron microscopy, X-ray diffractometry and cyclic voltammetry analyses. The X-ray diffraction patterns of samples were also studied by Rietveld's method. Results showed that the prepared electrode containing anatase, rutile andNiOphases with fraction of 70, 8, and 22%, respectively. It was found that by application of the new method, porousNiOuniformly coated on nanotubes surface and great enhancement of specific capacitance from 0.14 to 3.8 mF cm-2could be obtained. The prepared nanocomposites are promising materials for supercapacitance application and also for solar energy harvesting systems.

Keywords: Alginate; titania; nickel oxide; anodizing; supercapacitor (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1142/S0218625X13500625

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