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    Hydrogen evolution by a metal-free electrocatalyst

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    Type
    Article
    Authors
    Zheng, Yao
    Jiao, Yan cc
    Zhu, Yihan
    Li, Luhua
    Han, Yu cc
    Chen, Ying cc
    Du, Aijun
    Jaronieć, Mietek
    Qiao, Shi-Zhang cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Science Program
    Nanostructured Functional Materials (NFM) laboratory
    Physical Science and Engineering (PSE) Division
    Date
    2014-04-28
    Online Publication Date
    2014-04-28
    Print Publication Date
    2014-12
    Permanent link to this record
    http://hdl.handle.net/10754/563512
    
    Metadata
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    Abstract
    Electrocatalytic reduction of water to molecular hydrogen via the hydrogen evolution reaction may provide a sustainable energy supply for the future, but its commercial application is hampered by the use of precious platinum catalysts. All alternatives to platinum thus far are based on nonprecious metals, and, to our knowledge, there is no report about a catalyst for electrocatalytic hydrogen evolution beyond metals. Here we couple graphitic-carbon nitride with nitrogen-doped graphene to produce a metal-free hybrid catalyst, which shows an unexpected hydrogen evolution reaction activity with comparable overpotential and Tafel slope to some of well-developed metallic catalysts. Experimental observations in combination with density functional theory calculations reveal that its unusual electrocatalytic properties originate from an intrinsic chemical and electronic coupling that synergistically promotes the proton adsorption and reduction kinetics. © 2014 Macmillan Publishers Limited. All rights reserved.
    Citation
    Zheng, Y., Jiao, Y., Zhu, Y., Li, L. H., Han, Y., Chen, Y., … Qiao, S. Z. (2014). Hydrogen evolution by a metal-free electrocatalyst. Nature Communications, 5(1). doi:10.1038/ncomms4783
    Sponsors
    This research is financially supported by Australian Research Council (DP1095861, DP130104459). NEXAFS measurements were undertaken on the soft X-ray beamline at Australian Synchrotron. DFT calculations were undertaken on the NCI National Facility systems through the National Computational Merit Allocation Scheme.
    Publisher
    Springer Nature
    Journal
    Nature Communications
    DOI
    10.1038/ncomms4783
    PubMed ID
    24769657
    ae974a485f413a2113503eed53cd6c53
    10.1038/ncomms4783
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Science Program

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