A simply effective double-coating cathode with MnO2 nanosheets/graphene as functionalized interlayer for high performance lithium-sulfur batteries

Wang Sun, Xianguo Ou, Xinyang Yue, Yuxiang Yang, Zhenhua Wang, David Rooney, Kening Sun*

*Corresponding author for this work

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Herein, we report a facile and effective adsorption strategy to improve the performance of Lithium-Sulfur (Li-S) batteries. MnO2 nanosheets grown on the surface of highly conductive graphene resulted in a coupled composite bilayer electrode when coated onto a sulfur cathode. In this way, a high initial specific capacity of 1395 mA h g-1 at a rate of 0.5C, a coulombic efficiency approaching 100% and steady cyclic efficiency with a fade rate of 0.3% per cycle from 10 to 100 cycles has been achieved. This hybrid electrode not only shows enhanced electrochemical performance but can also be easily controlled and scaled thereby aiding future commercialization of high-performance Li-S batteries.

Original languageEnglish
Pages (from-to)198-206
Number of pages9
JournalElectrochimica Acta
Volume207
Early online date30 Apr 2016
DOIs
Publication statusPublished - 20 Jul 2016

    Fingerprint

Keywords

  • double-coating cathode
  • graphene
  • Lithium sulfur battery
  • metallic oxide

Cite this