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The sulfur–nitrogen co-doped porous carbon material derived from biomass was employed as the anode of a lithium–sulfur battery

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(5), pp.1385-1398
  • DOI : 10.1007/s42823-024-00697-2
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : October 25, 2023
  • Accepted : January 29, 2024
  • Published : June 14, 2024

Wang Xiaobin 1 Niu Miaosen 1 Gao Chengwu 1 Li Yu 1 Li Tao 1 Ren Baozeng 1

1Zhengzhou University

Accredited

ABSTRACT

The raw material selected for this research was Brazil chestnut shells (BCs), which were utilized to gain porous carbon as a positive electrode for lithium–sulfur batteries (LSBs). The effects of N/S co-doped on the electrochemical properties of porous carbon materials were studied using thiourea as nitrogen and sulfur sources. The experimental results indicate that the N/S co-doped carbon materials have a higher mesopore ratio than the undoped porous carbon materials. The porous carbon material NSPC-2 has a lotus-like structure with uniform pore distribution. The N and S doping contents are 2.5% and 5.4%. The prepared N/S co-doped porous carbon materials were combined with S, respectively, and three kinds of sulfur carbon composites were obtained. Among them, the composite NSPC-2/S can achieve the initial specific discharge capacity of 1018.6 mAh g−1 at 0.2 C rate. At 1 C rate, the initial discharge capacity of the material is 730.6 mAh g−1, and the coulomb efficiency is 98.6% and the capacity retention rate is 71.5% after 400 charge–discharge cycles.

Citation status

Scopus Citation Counts (2) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

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