Single-Step Flash-Heat-Treatment Synthesized Flame-Retardant Red Phosphorus/Graphene Composite as Flexible Anode for Sodium-Ion Batteries

ORAL

Abstract

Among all of the anode materials for Na-ion batteries, phosphorus guarantees its role with the high theoretical specific capacity of ~ 2600 mAh/g, and the red phosphorus (RP) is the most cost-effective allotrope. In this work, a facile single-step flash-heat-treatment synthesis method was developed to realize the reduction of graphene oxide (GO) and deposition of RP onto the reduced graphene oxide (rGO) sheets simultaneously, and the resulted RP/rGO composite has been subsequently demonstrated to solve the poor electronic conductivity and large volume variation issues of RP during cycling. The RP/rGO flexible film anode achieved an average capacity of 1625 mAh/g during the 200 cycles at 1 A/g charge/discharge current density. Average charge capacities of 1786, 1597, 1324 and 679 mAh/g at 1, 2, 4, and 6 A/g current densities were obtained in the rate capability test, respectively. Moreover, the RP/rGO film also presented excellent flame retardancy over the rGO film by taking the advantage of the RP ingredient.

*We would like to acknowledge the collaboration of this research with King Abdul-Aziz City for Science and Technology (KACST) via The Center of Excellence for Nanotechnologies (CEGN).

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Presenters

  • Yihang Liu

    • Ming Hsieh Department of Electrical Engineering, University of Southern California
    • Univ of Southern California

Authors

  • Yihang Liu

    • Ming Hsieh Department of Electrical Engineering, University of Southern California
    • Univ of Southern California

  • Anyi Zhang

    • Department of Chemical Engineering, University of Southern California
    • Mork Family Department of Chemical Engineering and Materials Science, University of Southern California
    • Univ of Southern California

  • Chenfei Shen

    • Univ of Southern California
    • Mork Family Department of Chemical Engineering and Materials Science, Univeristy of Southern California
    • Mork Family Department of Chemical Engineering and Materials Science, University of Southern California

  • Qingzhou Liu

    • Univ of Southern California
    • Mork Family Department of Chemical Engineering and Materials Science, University of Southern California

  • Jiansong Cai

    • Mork Family Department of Chemical Engineering and Materials Science, University of Southern California

  • Xuan Cao

    • Univ of Southern California
    • Department of Materials Science, University of Southern California
    • Mork Family Department of Chemical Engineering and Materials Science, University of Southern California

  • Chongwu Zhou

    • Department of Electrical Engineering, University of Southern California
    • Ming Hsieh Department of Electrical Engineering, University of Southern California
    • Univ of Southern California
    • Mork Family Department of Chemical Engineering and Materials Science & Ming Hsieh Department of Electrical Engineering, University of Southern California