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    3D non-precious metal-based electrocatalysts for the oxygen reduction reaction in acid media

    Access Status
    Fulltext not available
    Authors
    Zhang, H.
    Jiang, Q.
    Sun, L.
    Yuan, X.
    Shao, Zongping
    Ma, Z.
    Date
    2010
    Type
    Conference Paper
    
    Metadata
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    Citation
    Zhang, H. and Jiang, Q. and Sun, L. and Yuan, X. and Shao, Z. and Ma, Z. 2010. 3D non-precious metal-based electrocatalysts for the oxygen reduction reaction in acid media, pp. 8295-8302.
    Source Title
    International Journal of Hydrogen Energy
    DOI
    10.1016/j.ijhydene.2009.12.015
    ISSN
    0360-3199
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/30753
    Collection
    • Curtin Research Publications
    Abstract

    A series of non-precious metal catalysts for oxygen reduction reaction (ORR) in PEMFCs are prepared by pyrolysis of different precursors at 800 °C under an Ar atmosphere. These precursors are 3d transition metal triethylenetetramine chelates supported on carbon (MTETA/C, M = Fe, Co, Ni, Cu, Zn and Mn). Results by XRD and TEM indicate that the catalyst transforms to a carbon structure embedded with metal or metallic carbon after pyrolysis. Electrochemical measurements are achieved by rotating disk electrode and cycle voltammograms in 0.5 M H2SO4 solution, as well as single cell tests. The catalytic activities decreases as Fe > Co > Zn > Mn > metal-free >>Cu > > Ni. This suggests that the transition metal plays an important role in formation of the active sites. Single cell tests show that they have some potential applications as the cathode catalysts. Some potential catalytic active sites are also propounded. © 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

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