Supercapacitor application of nickel oxide-titania nanocomposites

Yibing Xie, Chuanjun Huang, Li Min Zhou, Yang Liu, Haitao Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

82 Citations (Scopus)

Abstract

Highly-ordered and well-separated titania nanotube array was prepared by a potentiostatic anodization process. The desired nickel oxide-titania (NiO-TiO2) nanocomposites were constructed through incorporating nickel hydroxide into titania nanotubes by a one-cycle or multi-cycle alternate electrodeposition-oxidation and then a thermal dehydration process. By means of the microstructure promotion from particulate to flower-like NiO-TiO2nanocomposite, specific capacitances were accordingly increased from 26.9 to 46.3 mF cm-2and energy densities were also improved from 13.1 to 33.3 for mw s cm-2in a redox supercapacitor application at a potential window of 1.2 V. The flower-like nanocomposite could keep 92.3% of initial capacitance even after 1000 cycles, presenting high operation stability in a continuous charge-discharge process. The superior energy-storage performance of flower-like nanocomposite was mostly attributed to its highly accessible redox reaction sites of three-dimensional NiO on TiO2nanotubes.
Original languageEnglish
Pages (from-to)2108-2114
Number of pages7
JournalComposites Science and Technology
Volume69
Issue number13
DOIs
Publication statusPublished - 1 Oct 2009

Keywords

  • A. Nano composite
  • A. Oxides
  • B. Electrical properties
  • B. Surface treatments
  • D. Scanning electron microscopy

ASJC Scopus subject areas

  • Ceramics and Composites
  • Engineering(all)

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