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Direct Synthesis of Fe3C-Functionalized Graphene by High Temperature Autoclave Pyrolysis for Oxygen Reduction

Authors

  • Yang Hu,

    1. Department of Energy Conversion and Storage, Technical University of Denmark, Kemitorvet 207, 2800, Kgs. Lyngby (Denmark)
    2. Laboratory of Advanced Power Sources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun (China)
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  • Dr. Jens Oluf Jensen,

    1. Department of Energy Conversion and Storage, Technical University of Denmark, Kemitorvet 207, 2800, Kgs. Lyngby (Denmark)
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  • Dr. Wei Zhang,

    1. Department of Energy Conversion and Storage, Technical University of Denmark, Risø campus, Frederiksborgvej 399, 4000, Roskilde (Denmark)
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  • Dr. Yunjie Huang,

    1. Department of Energy Conversion and Storage, Technical University of Denmark, Kemitorvet 207, 2800, Kgs. Lyngby (Denmark)
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  • Dr. Lars N. Cleemann,

    1. Department of Energy Conversion and Storage, Technical University of Denmark, Kemitorvet 207, 2800, Kgs. Lyngby (Denmark)
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  • Prof. Wei Xing,

    Corresponding author
    1. Laboratory of Advanced Power Sources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun (China)
    • Wei Xing, Laboratory of Advanced Power Sources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun (China)===

      Qingfeng Li , Department of Energy Conversion and Storage, Technical University of Denmark, Kemitorvet 207, 2800, Kgs. Lyngby (Denmark)===

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  • Prof. Niels J. Bjerrum,

    1. Department of Energy Conversion and Storage, Technical University of Denmark, Kemitorvet 207, 2800, Kgs. Lyngby (Denmark)
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  • Dr. Qingfeng Li

    Corresponding author
    1. Department of Energy Conversion and Storage, Technical University of Denmark, Kemitorvet 207, 2800, Kgs. Lyngby (Denmark)
    • Wei Xing, Laboratory of Advanced Power Sources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun (China)===

      Qingfeng Li , Department of Energy Conversion and Storage, Technical University of Denmark, Kemitorvet 207, 2800, Kgs. Lyngby (Denmark)===

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Abstract

We present a novel approach to direct fabrication of few-layer graphene sheets with encapsulated Fe3C nanoparticles from pyrolysis of volatile non-graphitic precursors without any substrate. This one-step autoclave approach is facile and potentially scalable for production. Tested as an electrocatalyst, the graphene-based composite exhibited excellent catalytic activity towards the oxygen reduction reaction in alkaline solution with an onset potential of ca. 1.05 V (vs. the reversible hydrogen electrode) and a half-wave potential of 0.83 V, which is comparable to the commercial Pt/C catalyst.

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