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    Activity and Stability of Ruddlesden-Popper-Type Lan+1NinO3n+1 (n=1, 2, 3, and 8) Electrocatalysts for Oxygen Reduction and Evolution Reactions in Alkaline Media

    Access Status
    Fulltext not available
    Authors
    Yu, J.
    Sunarso, J.
    Zhu, Y.
    Xu, X.
    Ran, R.
    Zhou, W.
    Shao, Zongping
    Date
    2016
    Type
    Journal Article
    
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    Citation
    Yu, J. and Sunarso, J. and Zhu, Y. and Xu, X. and Ran, R. and Zhou, W. and Shao, Z. 2016. Activity and Stability of Ruddlesden-Popper-Type Lan+1NinO3n+1 (n=1, 2, 3, and 8) Electrocatalysts for Oxygen Reduction and Evolution Reactions in Alkaline Media. Chemistry: A European Journal. 22 (8): pp. 2719-2727.
    Source Title
    Chemistry - A European Journal
    DOI
    10.1002/chem.201504279
    ISSN
    0947-6539
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/6912
    Collection
    • Curtin Research Publications
    Abstract

    © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Increasing energy demands have stimulated intense research activity on cleaner energy conversion such as regenerative fuel cells and reversible metal-air batteries. It is highly challenging but desirable to develop low-cost bifunctional catalysts for both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER), the lack of which is currently one of the major limiting components towards commercialization of these technologies. Here, we have conducted a systematic study on the OER and ORR performances of the Ruddlesden-Popper family of Lan+1NinO3n+1 (n=1, 2, 3, and 8) in an alkaline medium for the first time. It is apparent that the Ni-O bond lengths and the hyperstoichiometric oxides in the rock-salt layers correlate with the ORR activities, whereas the OER activities appear to be influenced by the OH- content on the surface of the compounds. In our case, the electronic configuration fails to predict the electrocatalytic activity of these compounds. This work provides guidelines to develop new electrocatalysts with improved performances.

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