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    A N-doped rice husk-based porous carbon as an electrocatalyst for the oxygen reduction reaction 氮掺杂稻壳基多孔炭的制备及其氧气还原反应的电催化性能

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    Type
    Article
    Authors
    Shi, Jun
    Lin, Nan
    Lin, Hai Bo
    Yang, Jin
    Zhang, Wen Li
    KAUST Department
    Materials Science and Engineering, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
    Embargo End Date
    2021-07-02
    Submitted Date
    2020-05-01
    Permanent link to this record
    http://hdl.handle.net/10754/666297
    
    Metadata
    Show full item record
    Abstract
    A N-doped rice husk-based porous carbon (N-RHPC) was cost-effectively prepared by simply treating RHPC at high temperature in an ammonia atmosphere. Results show that the mesopore volume and degree of graphitization of N-RHPC are significantly increased by the treatment. N atoms are doped in the RHPC structure in the form of pyridinic N (398.5 ± 0.1 eV), pyridonic N (399.3 ± 0.1 eV), and graphitic N groups (401.1 ± 0.1 eV) and N-oxide (401.8 ± 0.1 eV). Compared with a commercial Pt/C catalyst, the N-RHPC as an oxygen reduction electrocatalyst has a similar electrocatalytic activity, and better stability and methanol toxicity resistance. This excellent performance is ascribed to the increased number of catalytic sites afforded by the nitrogen species, the improved degree of graphitization that increases electron transfer, and the unique pore structure with macropores, mesopores and micropores for fast ion transport.
    Citation
    Shi, J., Lin, N., Lin, H., Yang, J., & Zhang, W. (2020). A N-doped rice husk-based porous carbon as an electrocatalyst for the oxygen reduction reaction. New Carbon Materials, 35(4), 401–409. doi:10.1016/s1872-5805(20)60497-8
    Sponsors
    National Key R&D Program of China (2017YFB0307500), National Natural Science Foundation of China (21975101), Science and Technology Innovation Team Project of Jilin University (2017TD-31), Major Science and Technology Research Project of "Shuangshi Project" in Changchun City (17SS018).
    Publisher
    Elsevier BV
    Journal
    Xinxing Tan Cailiao/New Carbon Materials
    DOI
    10.1016/S1872-5805(20)60497-8
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S1872580520604978
    ae974a485f413a2113503eed53cd6c53
    10.1016/S1872-5805(20)60497-8
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