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Hollow nanodendritic nickel oxide networks prepared by dealloying of nickel–copper alloy

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Abstract

Three-dimensional hollow nanorod network of nickel has been produced by a dealloying process of the electrodeposited nickel–copper alloy with nanodendritic structure. The nanostructured nickel was subsequently heat treated to form the nickel oxide with little change in the original structure. The resulting sample was tested as the high rate anode in a rechargeable lithium battery. It shows the exceptional rate capability, far exceeding that of the counterpart of nickel–copper oxide network with normal solid branches: reversible capacity at the rate of 20.9 A g−1 is approximately 70 % of the capacity at 0.26 A g−1 rate.

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Acknowledgments

This research was supported by the Converging Research Center Program (2013 K000212) and by the Nuclear Research and Development Program through the Ministry of Science, ICT and Future Planning, Korea. This work was partially supported by the National Research Foundation of Korea Grant funded by the Korean Government (NRF-2011-C1AAA001-0030538).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Pusan National University, Busan, 609-735, South Korea

    Woo-Sung Choi & Heon-Cheol Shin

  2. Center for Energy Convergence, Korea Institute of Science and Technology, Seoul, 136-791, South Korea

    Wonyoung Chang

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  1. Woo-Sung Choi
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  2. Wonyoung Chang
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  3. Heon-Cheol Shin
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Correspondence to Heon-Cheol Shin.

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Choi, WS., Chang, W. & Shin, HC. Hollow nanodendritic nickel oxide networks prepared by dealloying of nickel–copper alloy. J Solid State Electrochem 18, 427–433 (2014). https://doi.org/10.1007/s10008-013-2272-3

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  • DOI: https://doi.org/10.1007/s10008-013-2272-3

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