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A novel sulfur-impregnated porous carbon matrix as a cathode material for a lithium-sulfur battery

  • Yanhui Cui
  • , Xiao Liang
  • , Jue Ouyang
  • , Jiayi Huang
  • , Jiong Zeng
  • , Junwei Wu*
  • , Zuohua Li
  • , Chenqiang Du
  • , Zhoufu Li
  • , Andrew P. Baker
  • , Kevin Huang
  • , Xinhe Zhang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A novel sulfur-impregnated porous carbon matrix (PCM-Z-S) has been prepared as a cathode material for a lithium-sulfur battery. The porous carbon matrix (PCM-Z), which was obtained using de-waxed cotton and ZnCl2 as an activator, has a surface area of 1056 m2 g-1 and a pore volume of 1.75 cm3 g-1. The PCM-Z was mixed with sublimed sulfur and then heated in nitrogen gas to form a carbon-sulfur 58 wt% composite (PCM-Z-S) which has excellent electrochemical proprieties. The PCM-Z-S delivers a capacity of 850 mA h g-1 at 1C and retains 630 mA h g-1 after nearly 200 cycles which are values much higher than that of a carbon matrix prepared without ZnCl2. These results show the sulfur-impregnated porous carbon matrix (PCM-Z-S) has great potential as a cathode material in a lithium-sulfur battery.

Original languageEnglish
Pages (from-to)64228-64233
Number of pages6
JournalRSC Advances
Volume6
Issue number69
DOIs
StatePublished - 2016
Externally publishedYes

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