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Direct Growth of Cobalt Hydroxide Rods on Nickel Foam and Its Application for Energy Storage

Authors

  • Dr. Rahul R. Salunkhe,

    1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan), http://www.yamauchi-labo.com
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  • Dr. Bishnu Prasad Bastakoti,

    1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan), http://www.yamauchi-labo.com
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  • Dr. Chun-Tsung Hsu,

    1. Laboratory of Electrochemistry and Advanced Materials, Department of Chemical Engineering, National Tsing Hua University, Hsin-chu 30013 (Taiwan)
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  • Dr. Norihiro Suzuki,

    1. International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)
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  • Prof. Dr. Jung Ho Kim,

    1. Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, North Wollongong, NSW 2500 (Australia)
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  • Prof. Dr. Shi Xue Dou,

    1. Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus, North Wollongong, NSW 2500 (Australia)
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  • Prof. Dr. Chi-Chang Hu,

    Corresponding author
    1. Laboratory of Electrochemistry and Advanced Materials, Department of Chemical Engineering, National Tsing Hua University, Hsin-chu 30013 (Taiwan)
    • Chi-Chang Hu, Laboratory of Electrochemistry and Advanced Materials, Department of Chemical Engineering, National Tsing Hua University, Hsin-chu 30013 (Taiwan)

      Yusuke Yamauchi, World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)

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  • Prof. Dr. Yusuke Yamauchi

    Corresponding author
    1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan), http://www.yamauchi-labo.com
    2. Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555 (Japan)
    • Chi-Chang Hu, Laboratory of Electrochemistry and Advanced Materials, Department of Chemical Engineering, National Tsing Hua University, Hsin-chu 30013 (Taiwan)

      Yusuke Yamauchi, World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)

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Abstract

The present work reports synthesis of cobalt hydroxide (Co(OH)2) rods on nickel foam and its supercapacitor application. Hierarchical Co(OH)2 rods with length of approximately 3.5 μm and diameter of approximately 400 nm were prepared by one-step, simple, and inexpensive chemical-bath-deposition method. The direct growth of Co(OH)2 rods on the Ni foam gave three dimensional (3D) structure for easy access of electrolyte throughout material surface. Also, well-adhered interface between Co(OH)2 rods and Ni-foam surface gave better conduction channels. Detailed electrochemical study was performed by using cyclic voltammetry and galvanostatic charge/discharge measurements. The results demonstrate that Co(OH)2 rods on Ni foam are efficient electrodes for supercapacitor application.

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