A Free-Standing Sulfur/Nitrogen-Doped Carbon Nanotube Electrode for High-Performance Lithium/Sulfur Batteries

Yan Zhao, Fuxing Yin, Yongguang Zhang, Chengwei Zhang, Almagul Mentbayeva, Nurzhan Umirov, Hongxian Xie, Zhumabay Bakenov

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33 Citations (Scopus)

Abstract

A free-standing sulfur/nitrogen-doped carbon nanotube (S/N-CNT) composite prepared via a simple solution method was first studied as a cathode material for lithium/sulfur batteries. By taking advantage of the self-weaving behavior of N-CNT, binders and current collectors are rendered unnecessary in the cathode, thereby simplifying its manufacturing and increasing the sulfur weight ratio in the electrode. Transmission electronic microscopy showed the formation of a highly developed core-shell tubular structure consisting of S/N-CNT composite with uniform sulfur coating on the surface of N-CNT. As a core in the composite, the N-CNT with N functionalization provides a highly conductive and mechanically flexible framework, enhancing the electronic conductivity and consequently the rate capability of the material.

Original languageEnglish
Article number450
Pages (from-to)1-6
Number of pages6
JournalNanoscale Research Letters
Volume10
Issue number1
DOIs
Publication statusPublished - Dec 1 2015

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Keywords

  • Free-standing electrode
  • Lithium/sulfur battery
  • Sulfur/nitrogen-doped carbon nanotube composite cathode

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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