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Updated: Aug 5, 2026
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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
An ionic liquid co-solvent unlocks highly reversible six-electron redox in Zn-halogen batteries
Yanrong Liao1,2, Yuzhuo Tan1,2, Bo Chen1,2
1Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China. licc@gdut.edu.cn.
Chemical Communications (Cambridge, England)
|August 3, 2026
Summary
Highly reversible zinc-halogen batteries utilizing six-electron iodine-bromine redox chemistry were developed using a novel ionic liquid electrolyte. This advancement offers promising potential for next-generation energy storage solutions.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Zinc-halogen batteries offer high theoretical energy density.
- Reversibility and stability challenges have limited their practical application.
- Ionic liquids are explored as electrolytes to improve battery performance.
Purpose of the Study:
- To develop highly reversible Zn-halogen batteries.
- To investigate the use of a specific ionic liquid for enhanced redox chemistry.
- To enable efficient six-electron transfer in Zn-halogen systems.
Main Methods:
- Synthesis and characterization of 1-methyl-3-propylimidazolium bromide ionic liquid.
- Assembly and electrochemical testing of Zn-halogen battery prototypes.
- Analysis of the six-electron iodine-bromine redox process.
Main Results:
- The developed ionic liquid enabled highly reversible Zn-halogen battery operation.
- The six-electron iodine-bromine redox chemistry was successfully demonstrated.
- Stable cycling performance was observed, indicating enhanced battery longevity.
Conclusions:
- 1-methyl-3-propylimidazolium bromide ionic liquid is a viable electrolyte for high-performance Zn-halogen batteries.
- The six-electron redox process contributes to the high energy efficiency of these batteries.
- This work paves the way for advanced rechargeable zinc-based energy storage systems.
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