Rechargeable metal-SO2 batteries: Recent progress, current challenges and future prospects

Jahidul Islam, Mahmud Shareef, Jagotamoy Das, Xianghui Qi, Hossain M. Zabed*, Mayeen Uddin Khandaker, Abubakr M. Idris, Faisal I. Chowdhury

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

3 Scopus citations


To date, a large number of research programs have been carried out on metal-SO2 (M-SO2) batteries due to their promising applicability in space exploration, electric vehicles, and military purposes. Impressively, the non-flammability of SO2-based electrolytes is the exciting feature of M-SO2 batteries, which could be a solution for safe battery exploration. The primary M-SO2 batteries, especially primary Li-SO2 batteries (LSBs), have an energy density of about 330 W h kg−1, while the secondary LSBs are characterized by their high specific energy density (>1100 W h kg−1) and long shelf-life. Likewise, inspired by the secondary LSBs, rechargeable Na-SO2 batteries (NSBs) have also emerged. Besides, M-SO2 batteries would be more attractive for next-generation metal-gas batteries over metal-air batteries due to their lower charge polarization and higher cell voltage. Therefore, we are inspired to systematically discuss the electrochemistry, performances, and challenges of current M-SO2 batteries. Afterward, as a future direction, this review will provide the improvement strategies for current challenges associated with M-SO2 batteries. While only rechargeable LSBs and NSBs have been reported so far, an outlook is given on promising multivalent metals (such as Mg, Zn, and Al)-SO2 batteries for future development. Likewise, as photo-assisted batteries have recently attracted huge research attention, we will also provide a perspective on photo-assisted rechargeable M-SO2 batteries for future development.

Original languageEnglish (US)
Article number104952
JournalJournal of Energy Storage
StatePublished - Aug 15 2022


  • Cathode material
  • Electrolyte
  • Energy storage
  • Metal-SO battery
  • Safe battery

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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