Nitrogen and Sulfur Co-doped Two-Dimensional Highly Porous Carbon Nanosheets for High-Performance Lithium–Sulfur Batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

15 Scopus Citations
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Author(s)

  • Shaukat Khan
  • Mazhar Ul-Islam
  • Muhammad Sajjad
  • Muhammad Idrees
  • Muhammad Saeed
  • Muhammad Imran
  • Muhammad Sufyan Javed

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)2220-2227
Journal / PublicationEnergy and Fuels
Volume36
Issue number4
Online published4 Feb 2022
Publication statusPublished - 17 Feb 2022

Abstract

The multiple electron redox reactions of lithium (Li) and sulfur (S), concomitantly producing a series of lithium polysulfide intermediates, generally exhibit an insufficient cycle life and poor rate performance of lithium–sulfur (Li–S) batteries. This work reports a single-step and facile synthetic strategy for fabricating uniform, micro- and mesoporous, nitrogen–sulfur co-doped carbon nanosheets anchored on the surface of reduced graphene oxide (denoted as CNS@rGO). The composite was prepared by polymerizing m-aminobenzene sulfonic acid on the surface of graphene oxide (GO) and subsequent carbonization. The obtained CNS@rGO contains uniform micro- and mesopores for better sulfur loading and further accommodation of the discharged polysulfides. Such a free-standing electrode exhibits a stable specific capacity of 1355 mA h/g at 0.1 C (100 mA g–1) and good rate performance. CNS@rGO shows promising characteristics as a high-performance cathode material for Li–S batteries. Furthermore, even at a high current density of 1 C (1 A g–1), it exhibits high storage with a capacity of 476 mA h g–1 over 300 cycles with a decay of 16.8%, which outperforms all previously reported carbon-based materials for Li–S batteries.

Citation Format(s)

Nitrogen and Sulfur Co-doped Two-Dimensional Highly Porous Carbon Nanosheets for High-Performance Lithium–Sulfur Batteries. / Khan, Shaukat; Ul-Islam, Mazhar; Sajjad, Muhammad et al.
In: Energy and Fuels, Vol. 36, No. 4, 17.02.2022, p. 2220-2227.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review