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    Iron phosphide/N, P-doped carbon nanosheets as highly efficient electrocatalysts for oxygen reduction reaction over the whole pH range

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    Authors
    Hu, K.
    Xiao, Z.
    Cheng, Yi
    Yan, D.
    Chen, R.
    Huo, J.
    Wang, S.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Hu, K. and Xiao, Z. and Cheng, Y. and Yan, D. and Chen, R. and Huo, J. and Wang, S. 2017. Iron phosphide/N, P-doped carbon nanosheets as highly efficient electrocatalysts for oxygen reduction reaction over the whole pH range. Electrochimica Acta. 254: pp. 280-286.
    Source Title
    Electrochimica Acta
    DOI
    10.1016/j.electacta.2017.09.131
    ISSN
    0013-4686
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/65848
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Elsevier Ltd Developing electrocatalysts with both high activity and low cost for oxygen reduction reaction (ORR) has attracted much attention. Herein, we fabricated iron phosphide/N, P-doped carbon nanosheets electrocatalysts via a one-pot pyrolysis process without any post-treatments, which shows high ORR activity over the whole pH range. In alkaline solution, the optimal catalyst exhibits almost the same onset potential (0.918 V vs RHE) and half-wave potential (0.832 V vs RHE) with commercial Pt/C (20 wt %), meanwhile it shows prominent catalytic activity compared with Pt/C in acidic and neutral media. Noteworthy, the catalyst catalyzes ORR process following a one-step 4e pathway in all these media and poses better tolerance toward methanol and greater durability than Pt/C. It was proved that Fe x P (x = 1 or 2) and N, P-doped carbon synergistically contributed to the high ORR activity for the electrocatalysts. This work would broaden the application of iron phosphides in the field of electrocatalysis.

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