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Cobalt–nickel composite films synthesized by chemical bath deposition method as an electrode material for supercapacitors

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Abstract

Cobalt–nickel (Co–Ni) composite thin films were fabricated on copper substrates using a simple chemical bath deposition route in an ammonia-complexed solution containing cobalt chloride and nickel chloride. The structural and morphological properties of the film confirmed that the chemically deposited Co–Ni composites formed in the hydroxide phase and were well covered with irregular shaped nano-platelets. The chemically deposited Co–Ni composite electrode exhibited a maximum specific capacitance of 324 F/g, which was much larger than that of the pristine components. The cyclic voltammetry and charge–discharge test showed that the capacitance of the chemically deposited Co–Ni composite electrode mainly consisted of a pseudocapacitance.

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Acknowledgements

This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grant No. 2009-0070734) and Ajou University Research fellowship of 2007 and 2010 (Grant No. 20072650 and S-2010-G0001-00058).

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Authors and Affiliations

  1. Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, San 5 Woncheon-dong, Yeontong-gu, Suwon, 443-749, Korea

    Sunil G. Kandalkar, Hae-Min Lee, Seung Hye Seo & Chang-Koo Kim

  2. Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 120-749, Korea

    Kangtaek Lee

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  1. Sunil G. Kandalkar
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  2. Hae-Min Lee
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  3. Seung Hye Seo
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  4. Kangtaek Lee
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  5. Chang-Koo Kim
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Correspondence to Chang-Koo Kim.

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Kandalkar, S.G., Lee, HM., Seo, S.H. et al. Cobalt–nickel composite films synthesized by chemical bath deposition method as an electrode material for supercapacitors. J Mater Sci 46, 2977–2981 (2011). https://doi.org/10.1007/s10853-010-5174-0

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  • DOI: https://doi.org/10.1007/s10853-010-5174-0

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