Transformation of β-Ni(OH)2to NiO nano-sheets via surface nanocrystalline zirconia coating: Shape and size retention

  • Ming-Yao Cheng1 and

    Affiliated with

    • Bing-Joe Hwang1, 2Email author

      Affiliated with

      Nanoscale Research Letters20062:28

      DOI: 10.1007/s11671-006-9025-5

      Received: 14 August 2006

      Accepted: 4 October 2006

      Published: 11 November 2006

      Abstract

      Shape and size of the synthesized NiO nano-sheets were retained during transformation of sheet-like β-Ni(OH)2to NiO at elevated temperatures via nano-sized zirconia coating on the surface of β-Ni(OH)2. The average grain size was 6.42 nm after 600 °C treatment and slightly increased to 10 nm after 1000 °C treatment, showing effective sintering retardation between NiO nano-sheets. The excellent thermal stability revealed potential application at elevated temperatures, especially for high temperature catalysts and solid-state electrochemical devices.

      Keywords

      Thermal stability Nickel oxide Solid oxide fuel cell Surface coating Anode

      [120]

      Declarations

      Acknowledgement

      The authors thank National Science Council (NSC-94-2120-M-011-002 and NSC-94-2214-E-011-010, Taiwan, R.O.C.) and National Taiwan University of Science and Technology for financial supports. FEG-TEM support from Institute of Material Science and Engineering, National Sun Yat-sen University is also acknowledged.

      Authors’ Affiliations

      (1)
      Nano-electrochemistry Laboratory Department of Chemical Engineering, National Taiwan University of Science and Technology
      (2)
      National Synchrotron Radiation Research Center

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      © to the authors 2006