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    All-Carbon Hybrid Mobile Ion Capacitors Enabled by 3D Laser Scribed Graphene

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    Type
    Article
    Authors
    Zhang, Fan cc
    Zhang, Wenli cc
    Guo, Jing
    Lei, Yongjiu cc
    Dar, Mushtaq A.
    Almutairi, Zeyad
    Alshareef, Husam N. cc
    KAUST Department
    Functional Nanomaterials and Devices Research Group
    Material Science and Engineering
    Material Science and Engineering Program
    Materials Science and EngineeringPhysical Science & Engineering DivisionKing Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
    Physical Science and Engineering (PSE) Division
    Date
    2020-03-24
    Online Publication Date
    2020-03-24
    Print Publication Date
    2020-06
    Submitted Date
    2020-02-27
    Permanent link to this record
    http://hdl.handle.net/10754/662200
    
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    Abstract
    Hybrid mobile ion capacitors (HMIC) have been proposed as a way to incorporate the advantages of both batteries and supercapacitors into one system. Unfortunately, considering the much slower Li+ intercalation/deintercalation process, finding a suitable battery anode material with high rate performance is still a major challenge. Here, we report the fabrication of laser scribed nitrogen-doped graphene (NLSG) with 3D structure as binder-free, and conductive additive-free anode. This NLSG anode has high nitrogen and oxygen doping (8.6 at% and 6.3 at%) leading to the formation of conductive electrodes with expanded lattice spacing, providing more convenient pathways and reaction sites for Li+ ions. Hybrid Li-ion capacitors (HLIC) were assembled by combining the NLSG anodes with hierarchical porous carbon (PC) cathodes obtained by pyrolysis of Ethylenediaminetetraacetic (EDTA) tetrasodium salt. The NLSG//PC hybrid Li-ion capacitors show an energy density (including the total weight of two electrodes) of 186 Wh kg−1 at 200 W kg−1. Even when power density increased to the level of conventional supercapacitors (20 kW kg−1), an energy density of 76 Wh kg−1 can still be obtained. Further, the devices exhibit excellent cycle life, retaining 87.5% of the initial value after 5000 cycles. This study demonstrates that laser scribed graphene is a very promising electrode for mobile ion capacitors.
    Citation
    Zhang, F., Zhang, W., Guo, J., Lei, Y., Dar, M. A., Almutairi, Z., & Alshareef, H. N. (2020). All-Carbon Hybrid Mobile Ion Capacitors Enabled by 3D Laser Scribed Graphene. Energy Technology. doi:10.1002/ente.202000193
    Sponsors
    The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST) under the KAUST-King Saud University Battery Initiative (KAUST Grant # REP/1/3804-01). The authors thank the Core Laboratory Staff at KAUST for their support. M.A.D. and Z.A. greatly acknowledge Deanship of Scientific Research at King Saud University for funding research grant no RG#1440-115
    Publisher
    Wiley
    Journal
    Energy Technology
    DOI
    10.1002/ente.202000193
    Additional Links
    https://onlinelibrary.wiley.com/doi/abs/10.1002/ente.202000193
    ae974a485f413a2113503eed53cd6c53
    10.1002/ente.202000193
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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