SnS2@reduced graphene oxide nanocomposites as anode materials with high capacity for rechargeable lithium ion batteries

Jiefu Yin, Huaqiang Cao*, Zhongfu Zhou, Jingxian Zhang, Meizhen Qu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

94 Citations (SciVal)

Abstract

Nanostructured electrode materials have been studied extensively with the aim of enhancing lithium ion and electron transport, lowering the stress caused by their volume changes during the charge/discharge processes of electrodes, and decreasing overpotential of the electrode reactions in lithium ion batteries. In this work, we develop a new synthetic route to high capacity "double-sandwich-like" SnS2-based nanocomposites (i.e., SnS2-reduced graphene oxide, termed as SSG) which can be used as an anode material in LIBs with improved electrochemical properties, such as large initial discharge capacity (1032 mA h g(-1)), high reversible discharge capacity (738 mA h g(-1), or 1421 mA h cm(-3) at 2nd cycle), and excellent cyclability (564 mA h g(-1), or 1087 mA h cm(-3) after 60 cycles, corresponding to similar to 76.5% of the initial reversible capacity), with an excellent coulombic efficiency of similar to 96.9%. The electrochemical reaction mechanism of SnS2 with lithium has been suggested to be the alloy-type storage lithium mechanism.

Original languageEnglish
Pages (from-to)23963-23970
Number of pages8
JournalJournal of Materials Chemistry
Volume22
Issue number45
Early online date26 Sept 2012
DOIs
Publication statusPublished - 07 Dec 2012

Keywords

  • STORAGE
  • RAMAN-SCATTERING
  • ELECTROCHEMICAL PERFORMANCE
  • COMPOSITES
  • MICROWAVE-ASSISTED SYNTHESIS
  • SNO2
  • X-RAY
  • SNS2
  • FACILE SYNTHESIS
  • STRUCTURAL-CHARACTERIZATION

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