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

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2022, 32(6), pp.1425-1432
  • DOI : 10.1007/s42823-022-00390-2
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : June 24, 2022
  • Accepted : August 10, 2022
  • Published : October 1, 2022

Soni Sunil 1 Kumar Ranveer 1 Sodhiya Anubha 1 Patel Shwetambar 1 Singh Arun Kumar 1

1Department of Physics, Dr. Harisingh Gour Vishwavidyalaya, Sagar, Madhya Pradesh

Accredited

ABSTRACT

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.

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