Enhanced electrochemical performance of sulfur/polyacrylonitrile composite by carbon coating for lithium/sulfur batteries

Huifen Peng, Xiaoran Wang, Yan Zhao, Taizhe Tan, Almagul Mentbayeva, Zhumabay Bakenov, Yongguang Zhang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A carbon-coated sulfur/polyacrylonitrile (C@S/PAN) core-shell structured composite is successfully prepared via a novel solution processing method. The sulfur/polyacrylonitrile (S/PAN) core particle has a diameter of ~ 100 nm, whereas the carbon shell is about 2 nm thick. The as-prepared C@S/PAN composite shows outstanding electrochemical performance in lithium/sulfur (Li/S) batteries delivering a high initial discharge capacity of 1416 mAh g−1. Furthermore, it exhibits ~ 89% retention of the initial reversible capacity over 200 cycles at a constant current rate of 0.1 C. The improved performance contributed by the unique composition and the core-shell structure, wherein carbon matrix can also withstand the volume change of sulfur during the process of charging and discharging as well as provide channels for electron transport. In addition, polyacrylonitrile (PAN) matrix suppresses the shuttle effect by the covalent bonding between sulfur (S) and carbon (C) in the PAN matrix. [Figure not available: see fulltext.].

Original languageEnglish
Article number348
JournalJournal of Nanoparticle Research
Volume19
Issue number10
DOIs
Publication statusPublished - Oct 1 2017

Keywords

  • Carbon-coated sulfur/polyacrylonitrile composite
  • Cathode
  • Core-shell
  • Energy conversion
  • Lithium/sulfur battery

ASJC Scopus subject areas

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Chemistry(all)
  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Enhanced electrochemical performance of sulfur/polyacrylonitrile composite by carbon coating for lithium/sulfur batteries'. Together they form a unique fingerprint.

  • Cite this