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Polysulfide chemistry in metal-sulfur batteries
Xi-Yao Li1, Meng Zhao1, Yun-Wei Song1
1Tsinghua Center for Green Chemical Engineering Electrification (CCEE), Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
Chemical Society Reviews
|April 1, 2025
Summary
Metal-sulfur batteries utilize polysulfides (PSs) for high energy density. This review details PS chemistry, regulation strategies, and challenges to advance battery performance.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Metal-sulfur (M-S) batteries offer high theoretical energy density and cost-effectiveness, crucial for energy storage solutions.
- Polysulfides (PSs) are key intermediates in M-S batteries, influencing electrode behavior and overall performance.
Purpose of the Study:
- To provide a comprehensive overview of polysulfide chemistry in high-energy-density M-S battery systems.
- To identify and discuss strategies for regulating PS behavior to enhance battery performance.
- To outline future research directions in M-S battery technology.
Main Methods:
- Review of existing literature on polysulfide composition, properties, and characterization.
- Analysis of the chemical and electrochemical behaviors of polysulfides in working batteries.
- Examination of polysulfide regulation strategies including molecular modification, solvation optimization, and interfacial control.
Main Results:
- Fundamental understanding of PS chemistry, properties, and characterization methods.
- Insights into the impact of PS chemical and electrochemical behaviors on electrode performance.
- Discussion of effective strategies for PS regulation to improve M-S battery performance.
Conclusions:
- Understanding polysulfide chemistry is critical for advancing M-S battery technology.
- Strategic regulation of polysulfides can lead to superior battery performance.
- Addressing challenges related to polysulfides is essential for practical M-S battery applications.
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