Effect of mesoporous carbon microtube prepared by carbonizing the poplar catkin on sulfur cathode performance in Li/S batteries

Yongguang Zhang, Yan Zhao, Aishuak Konarov, Zhi Li, P. Chen

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

A carbon microtube (CMT) was synthesized by carbonizing the poplar catkin and composited with sulfur, serving as a cathode for lithium/sulfur batteries. Scanning electron microscopy and energy dispersive spectroscopy mapping showed the formation of a tubular structure with uniform sulfur coating on the surface of CMTs. The CMT with a mesoporous surface is beneficial to both trapping soluble polysulfide intermediates and rendering the electrical conductivity of the prepared electrode. The resulting S/CMT composite cathode can deliver an 810 mAh g-1reversible specific discharge capacity after 100 cycles at 0.1 C, and 585 mAh g-1at 1 C.

Original languageEnglish
Pages (from-to)298-302
Number of pages5
JournalJournal of Alloys and Compounds
Volume619
DOIs
Publication statusPublished - Jan 15 2015

Keywords

  • Carbon microtube
  • Lithium/sulfur battery
  • Poplar catkin
  • Sulfur cathode
  • Sulfur/carbon microtube composite

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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