Effect of Graphene on Sulfür/Polyacrylonitrile Nanocomposite Cathode in High Performance Lithium/Sulfür Batteries

Yongguang Zhang, Yan Zhao, Aishuak Konarov, Cong Ding, P. Chen, Zhumabay Bakenov, Moulay Rachid Babaa

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

A novel sulfür/polyacrylonitrile/graphene nanocomposite has been synthesized via a simple combination of ballmilling with low temperature heat-treatment. The nanocomposite was examined as a cathode for high performance lithium/sulfür batteries. The SEM and TEM observations revealed that sulfür/polyacrylonitrile particles are incorporated into graphene networks homogenously. Charge/discharge tests and ac impedance spectroscopy have shown improved conductivity and electrochemical properties of the composite with the addition of graphene. The lithium cell with this ternary composite cathode delivered a discharge capacity of 612 mAh g-1 in the second cycle at 0.1 C, and retained about 77% of this value over 100 cycles. Even upto4 C rate, the lithium cell demonstrated an excellent rate capability, delivering a highly reversible discharge capacity of 360 mAh g-1.

Original languageEnglish
Pages (from-to)A1194-A1198
JournalJournal of the Electrochemical Society
Volume160
Issue number8
DOIs
Publication statusPublished - Jan 1 2013

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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