Improving a Mg/S Battery with YCl3 Additive and Magnesium Polysulfide

Yan Xu, Guangmin Zhou, Shuyang Zhao, Wanfei Li, Feifei Shi, Jia Li, Jun Feng, Yuxing Zhao, Yang Wu, Jinghua Guo, Yi Cui, Yuegang Zhang

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Rechargeable magnesium/sulfur (Mg/S) batteries are widely regarded as one of the alternatives to lithium-ion batteries. However, a key factor restricting their application is the lack of suitable electrolyte. Herein, an electrolyte additive that can reduce the polarization voltage is developed and 98.7% coulombic efficiency is realized. The as-prepared Mg-ion electrolyte exhibits excellent Mg plating/stripping performance with a low overpotential of 0.11 V for plating process, and high anodic stability up to 3.0 V (vs Mg/Mg2+). When it is coupled with magnesium polysulfide, which has high reactivity and is homogeneously distributed on carbon matrix, the Mg/S cells deliver a good cycling stability with a high discharge capacity over 1000 mAh g−1 for more than 50 cycles.

Original languageEnglish (US)
Article number1800981
JournalAdvanced Science
Volume6
Issue number4
DOIs
StatePublished - Feb 20 2019

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Chemical Engineering(all)
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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