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    Enabling High and Stable Electrocatalytic Activity of Iron-Based Perovskite Oxides for Water Splitting by Combined Bulk Doping and Morphology Designing

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    Authors
    Dai, J.
    Zhu, Y.
    Zhong, Y.
    Miao, J.
    Lin, B.
    Zhou, W.
    Shao, Zongping
    Date
    2019
    Type
    Journal Article
    
    Metadata
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    Citation
    Dai, J. and Zhu, Y. and Zhong, Y. and Miao, J. and Lin, B. and Zhou, W. and Shao, Z. 2019. Enabling High and Stable Electrocatalytic Activity of Iron-Based Perovskite Oxides for Water Splitting by Combined Bulk Doping and Morphology Designing. Advanced Materials Interfaces. 6 (1): Article ID 1801317.
    Source Title
    Advanced Materials Interfaces
    DOI
    10.1002/admi.201801317
    ISSN
    2196-7350
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/73989
    Collection
    • Curtin Research Publications
    Abstract

    The catalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are crucial for water splitting technology, and perovskite oxides have received tremendous attention as promising candidates due to the compositional flexibility and rich properties. Here, reported is the successful deployment of cost-effective iron-based perovskites into efficient water splitting catalysts with both high activity and stability by combined bulk and morphology tuning strategy. Through constructing 3D ordered macroporous (3DOM) structure of LaFeO3 perovskite, approximately twofold and approximately fourfold enhancement in activity for OER and HER, respectively were realized together with much improved OER durability. By a small amount of cobalt doping, both catalytic activity and stability were further improved with activity comparing favorably to or even outperforming Co-/Ni-rich perovskite catalysts. Enhanced performance is correlated with optimized Fe/O species, high surface area, and good charge/mass transport.

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