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    Facile synthesis of nitrogen-doped carbon nanotubes encapsulating nickel cobalt alloys 3D networks for oxygen evolution reaction in an alkaline solution

    Access Status
    Fulltext not available
    Authors
    Yu, J.
    Zhong, Y.
    Zhou, W.
    Shao, Zongping
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Yu, J. and Zhong, Y. and Zhou, W. and Shao, Z. 2017. Facile synthesis of nitrogen-doped carbon nanotubes encapsulating nickel cobalt alloys 3D networks for oxygen evolution reaction in an alkaline solution. Journal of Power Sources. 338: pp. 26-33.
    Source Title
    Journal of Power Sources
    DOI
    10.1016/j.jpowsour.2016.11.023
    ISSN
    0378-7753
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/2734
    Collection
    • Curtin Research Publications
    Abstract

    © 2016 Elsevier B.V. Efficient oxygen evolution reaction (OER) catalysts are required to facilitate the large-scale exploitation of renewable energy resources and applications in electrochemical energy conversion technologies. Here, we show that metal alloy-based hybrids can provide higher electrocatalytic activity than their individual metal-based hybrids. In particular, NiCo alloys encapsulated within nitrogen-doped carbon nanotubes (NiCo@NCNTs) showed higher OER activities in an alkaline solution than the individual metal hybrids (Ni@NCNTs and Co@NCNTs), highlighting a synergy between the Ni and Co components. NiCo@NCNTs pyrolyzed at 800 °C displayed an overpotential of ~41 mV at a current density of 10 mA cm-2 and were more stable than IrO2 during 1000-cycle accelerated durability testing at a scan rate of 100 mV s-1.

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