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Trapping lithium polysulfides within the cathode by doping MnO2 nanorods into an exfoliated graphite/sulfur composite for lithium–sulfur batteries KCI 등재

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  • URLhttps://db.koreascholar.com/Article/Detail/421059
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Carbon Letters (Carbon letters)
한국탄소학회 (Korean Carbon Society)
초록

Here, we have demonstrated the successful exfoliation of graphite into a layered material with scotch tape-like exfoliation. Sulfur acts as an exfoliating agent and exfoliates the loosely bounded graphite stacks. The shear force by ball milling provides the force required to overcome the van der Waals force between the layers. The MnO2 nanorods were synthesized using a KMnO4 precursor in a hydrothermal arrangement, and due to their intrinsic chemisorption capability, they were doped for polysulfide trapping. With an initial capacity of 1150 mAh/g achieved by the MnO2 nanorod-doped exfoliate-graphite/sulfur composite material, the material has displayed its application in lithium–sulfur batteries, but its use is not limited; it can be a low-cost eco-friendly solution to various energy storage systems with extensive structural qualities.

목차
    Abstract
    1 Introduction
    2 Materials and methods
        2.1 Chemicals
        2.2 Materials synthesis
        2.3 Characterization
        2.4 Electrochemical characterization
    3 Results and discussion
        3.1 X-ray diffraction
        3.2 Morphological analysis
        3.3 Simultaneous thermal analysis
        3.4 Electrochemical analysis
    4 Conclusion
    Acknowledgements 
    References
저자
  • Sunil Soni(Department of Physics, Dr. Harisingh Gour Vishwavidyalaya)
  • Ranveer Kumar(Department of Physics, Dr. Harisingh Gour Vishwavidyalaya)
  • Anubha Sodhiya(Department of Physics, Dr. Harisingh Gour Vishwavidyalaya)
  • Shwetambar Patel(Department of Physics, Dr. Harisingh Gour Vishwavidyalaya)
  • Arun Kumar Singh(Department of Physics, Dr. Harisingh Gour Vishwavidyalaya)