Using an AlCl3/Urea Ionic Liquid Analog Electrolyte for Improving the Lifetime of Aluminum-Sulfur Batteries

Yinghui Bian, Yu Li, Zhichao Yu, Hui Chen, Kewen Du, Chaochao Qiu, Guoxin Zhang, Zichuan Lv, Meng Chang Lin

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Aluminum-sulfur (Al−S) chemistry is attractive for the development of next-generation rechargeable battery systems. However, only a few reversible Al−S cells have been reported until now. This paper demonstrates that the use of an AlCl3/urea electrolyte in Al−S cells is a promising approach to improve the cycle life and reach a high discharge voltage plateau of ∼1.6–2.0 V. In contrast to the instability of sulfur in the conventional AlCl3/EMIC electrolyte, sulfur is chemically stable in the AlCl3/urea electrolyte, which allows better cell cycling stability. The Al−S cell delivers an initial capacity of ∼700 mAh gs −1 and maintains a capacity of up to ∼500 mAh gs −1 after 100 cycles.

Original languageEnglish
Pages (from-to)3607-3611
Number of pages5
JournalChemElectroChem
Volume5
Issue number23
DOIs
Publication statusPublished - Dec 3 2018
Externally publishedYes

Keywords

  • AlCl/urea
  • aluminium−sulfurbatteries
  • carbon nanotubes
  • high discharge voltage plateau
  • long cycle life

ASJC Scopus subject areas

  • Catalysis
  • Electrochemistry

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