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    A Permselective CeOx Coating Improves the Stability of Oxygen Evolution Electrocatalysts

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    Type
    Article
    Authors
    Obata, Keisuke cc
    Takanabe, Kazuhiro cc
    KAUST Department
    Catalysis for Energy Conversion (CatEC)
    Chemical Science Program
    KAUST Catalysis Center (KCC)
    Physical Science and Engineering (PSE) Division
    Date
    2018-01-05
    Online Publication Date
    2018-01-05
    Print Publication Date
    2018-02-05
    Permanent link to this record
    http://hdl.handle.net/10754/626315
    
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    Abstract
    Highly active NiFeOx electrocatalysts for the oxygen evolution reaction (OER) suffer gradual deactivation with time due to the loss of Fe species from the active sites into solution during catalysis. Here, we describe the anodic deposition of a CeOx layer that prevents the loss of such Fe species from the OER catalysts, achieving a highly stable performance. The CeOx layer does not affect the OER activity of the catalyst underneath but exhibits unique permselectivity, allowing the permeation of OH- and O2 through while preventing the diffusion of redox ions through the layer to function as a selective O2-evolving electrode. The use of such permselective protective layer provides a new strategy for improving the durability of electrocatalysts.
    Citation
    Obata K, Takanabe K (2017) A Permselective CeOx Coating Improves the Stability of Oxygen Evolution Electrocatalysts. Angewandte Chemie International Edition. Available: http://dx.doi.org/10.1002/anie.201712121.
    Sponsors
    The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST). The authors appreciate the kind assistance of Dr. J. Bau at KAUST for TEM images.
    Publisher
    Wiley
    Journal
    Angewandte Chemie
    DOI
    10.1002/anie.201712121
    10.1002/ange.201712121
    Additional Links
    http://onlinelibrary.wiley.com/doi/10.1002/anie.201712121/abstract
    ae974a485f413a2113503eed53cd6c53
    10.1002/anie.201712121
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

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