Understanding the Oxidation and Reduction Reactions of Sulfur in Rechargeable Aluminum-Sulfur Batteries with Deep Eutectic Solvent and Ionic Liquid Electrolytes

Yinghui Bian, Weichuan Jiang, Yonglei Zhang, Lishun Zhao, Xiaohang Wang, Zichuan Lv, Shuai Zhou, Yuqing Han, Hui Chen, Meng Chang Lin

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Al-based batteries are promising next-generation rechargeable batteries owing to the abundance of raw materials and their high potential energy density. The Al−S system has attracted considerable attention because of its high energy density and low cost. However, its low discharge voltage plateau (0.6–1.2 V) hampers its practical application. Herein, eight ionic liquids or deep eutectic solvents were studied as electrolyte candidates for an Al−S cell. This was the first study to demonstrate that an Al−S cell based on an AlCl3/acetamide electrolyte (1.3 molar ratio) showed high discharge voltage plateaus (1.65–1.95 V) and a charging cut-off voltage of 2.5 V in Al−S cells. An Al−S cell of 0.33 mAh capacity with the AlCl3/acetamide electrolyte successfully lit up a red LED (forward voltage 1.6–2.0 V) for around 2 h. This work may help in promoting the development of high-performance and low-cost Al−S cells.

Original languageEnglish
Article numbere202101398
JournalChemSusChem
Volume15
Issue number1
DOIs
Publication statusPublished - Jan 10 2022
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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