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    Manipulating the Local Coordination and Electronic Structures for Efficient Electrocatalytic Oxygen Evolution

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    AM.pdf
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    1.000Mb
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    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2022-08-21
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    Type
    Article
    Authors
    Wu, Zhi-Peng cc
    Zhang, Huabin cc
    Zuo, Shouwei
    Wang, Yan
    Zhang, Song Lin
    Zhang, Jing
    Zang, Shuang-Quan cc
    Lou, Xiong Wen (David) cc
    KAUST Department
    KAUST Catalysis Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955–6900 Saudi Arabia
    Physical Science and Engineering (PSE) Division
    Date
    2021-08-21
    Online Publication Date
    2021-08-21
    Print Publication Date
    2021-10
    Embargo End Date
    2022-08-21
    Submitted Date
    2021-04-20
    Permanent link to this record
    http://hdl.handle.net/10754/670708
    
    Metadata
    Show full item record
    Abstract
    Non-noble-metal-based nanomaterials can exhibit extraordinary electrocatalytic performance toward the oxygen evolution reaction (OER) by harnessing the structural evolution during catalysis and the synergistic effect between elements. However, the structure of active centers in bimetallic/multimetallic catalysts is under long-time debate in the catalysis community. Here, an efficient bimetallic Ni–Fe selenide-derived OER electrocatalyst is reported and the structure–activity correlation during the OER evolution studied. By combining experiments and theoretical calculations, a conceptual advance is provided, in that the local coordination structure distortion and disordering of active sites inherited from the pre-catalyst and post-formed by a further reconstruction are responsible for boosting the OER performance. The active center is identified on Ni sites showing moderate bindings with oxygenous intermediates rather than Fe sites with strong and poisonous adsorptions. These findings provide crucial understanding in manipulating the local coordination and electronic structures toward rational design and fabrication of efficient OER electrocatalysts.
    Citation
    Wu, Z., Zhang, H., Zuo, S., Wang, Y., Zhang, S. L., Zhang, J., … Lou, X. W. (David). (2021). Manipulating the Local Coordination and Electronic Structures for Efficient Electrocatalytic Oxygen Evolution. Advanced Materials, 2103004. doi:10.1002/adma.202103004
    Sponsors
    X.W.L. acknowledges the funding support from the Ministry of Education of Singapore through the Academic Research Fund (AcRF) Tier-2 grant (MOE2019-T2-2-049). The National Science Fund for Distinguished Young Scholars (21825106) and the China Postdoctoral Science Foundation (2020M682333) are also acknowledged.
    Publisher
    Wiley
    Journal
    Advanced Materials
    DOI
    10.1002/adma.202103004
    Additional Links
    https://onlinelibrary.wiley.com/doi/10.1002/adma.202103004
    ae974a485f413a2113503eed53cd6c53
    10.1002/adma.202103004
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division

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