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    Accordion-Like Carbon with High Nitrogen Doping for Fast and Stable K Ion Storage

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    Type
    Article
    Authors
    Zhang, Wenli cc
    Sun, Minglei cc
    Yin, Jian
    Lu, Ke
    Schwingenschlögl, Udo cc
    Qiu, Xueqing
    Alshareef, Husam N. cc
    KAUST Department
    Computational Physics and Materials Science (CPMS)
    Functional Nanomaterials and Devices Research Group
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2021-09-24
    Online Publication Date
    2021-09-24
    Print Publication Date
    2021-11
    Embargo End Date
    2022-09-24
    Submitted Date
    2021-06-23
    Permanent link to this record
    http://hdl.handle.net/10754/671933
    
    Metadata
    Show full item record
    Abstract
    Potassium ion battery (PIB) is a potential candidate for future large-scale energy storage. A key challenge is that the (de)potassiation stability of graphitic carbon anodes is hampered by the limited (002) interlayer spacing. Amorphous carbon with a hierarchical structure can buffer the volume change during repeated (de)potassiation and enable stable cycling. Herein, a direct pyrolysis approach is demonstrated to synthesize a highly nitrogen-doped (26.7 at.%) accordion-like carbon anode composed of thin carbon nanosheets and a turbostratic crystalline structure. The hierarchical structure of accordion-like carbon is endowed by a self-assembly process during pyrolysis carbonization. The hierarchical nitrogen-doped accordion structure enables a high reversible capacity of 346 mAh g−1 and superior cycling stability. This work constitutes a general synthesis methodology that can be used to prepare hierarchical carbon anodes for advanced PIBs.
    Citation
    Zhang, W., Sun, M., Yin, J., Lu, K., Schwingenschlögl, U., Qiu, X., & Alshareef, H. N. (2021). Accordion-Like Carbon with High Nitrogen Doping for Fast and Stable K Ion Storage. Advanced Energy Materials, 2101928. doi:10.1002/aenm.202101928
    Sponsors
    W.L.Z., M.L.S., and J.Y. contributed equally to this work. The authors acknowledge the financial support from King Abdullah University of Technology (KAUST), the financial support from the National Key Research and Development Plan (NO. 2018YFB1501503), the Research and Development Program in Key Fields of Guangdong Province (NO. 2020B1111380002), and the National Natural Science Foundation of China (No. 22108044). W.L.Z. acknowledges the financial support from the Guangdong Provincial Key Laboratory of Plant Resources Biorefinery (No. 2021GDKLPRB07, No. 2021GDKLPRB-K06).
    Publisher
    Wiley
    Journal
    Advanced Energy Materials
    DOI
    10.1002/aenm.202101928
    Additional Links
    https://onlinelibrary.wiley.com/doi/10.1002/aenm.202101928
    ae974a485f413a2113503eed53cd6c53
    10.1002/aenm.202101928
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; Computational Physics and Materials Science (CPMS)

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