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Study on the Electrodeposition of Ni-P Nanowires and Their Electrocatalytic Properties

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Abstract

The anodized aluminum oxide (AAO) template was used in the electrodeposition of Ni-P alloy in this study. The fabricated Ni-P wires were 70 to 80 nm in diameter and 15 to 20 μm in length. The analyses employing a field-emission scanning electron microscope, X-ray diffraction, transmission electron microscope, and X-ray photoelectron spectrometer (XPS) showed these nanowires were amorphous structure mixed with nanosized grains and had preferred orientation along its length. From the cathodic polarization measurements in 0.5M H2SO4 electrolyte, it was found that the Ni-P nanowires demonstrated a nearly double magnitude in the current at –0.75 VSCE compared with its solid film counterpart. Thus, the enhancement of the electrocatalytic activity due to the increase in the surface area of the nanowired structure was demonstrated and discussed. However, the formation of oxide film on the surface of the nanowire was discovered after cathodic polarization. The effect of the oxide film was also discussed in this article.

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Acknowledgment

The financial support from the National Science Council, Taiwan, under Grant No. NSC 98-2221-E-027 -083 -MY3 is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Mechanical and Automation Engineering, Da-Yeh University, Changhua 515, Taiwan, Republic of China

    C. S. Hsu (Graduate Student)

  2. Department of Materials Science and Engineering, Da-Yeh University, Changhua 515, Taiwan, Republic of China

    H. B. Lee (Instructor)

  3. Department of Materials Science and Engineering, National Taiwan University, Taipei, 106, Taiwan, Republic of China

    C. S. Lin (Professor)

  4. Department of Mechanical Engineering, National Taipei University of Technology, Taipei, 106, Taiwan, Republic of China

    C. Y. Lee (Professor)

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  1. C. S. Hsu
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  2. H. B. Lee
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  3. C. S. Lin
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Correspondence to C. Y. Lee.

Additional information

Manuscript submitted August 25, 2009.

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Hsu, C.S., Lee, H.B., Lin, C.S. et al. Study on the Electrodeposition of Ni-P Nanowires and Their Electrocatalytic Properties. Metall Mater Trans A 41, 768–774 (2010). https://doi.org/10.1007/s11661-009-0123-8

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