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An aqueous alkaline zinc-sulfur flow battery
Rui Nie1, Yizhe Nie1, Jiajun Wu1
1Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China. xijy@tsinghua.edu.cn.
Chemical Communications (Cambridge, England)
|February 20, 2024
Summary
Researchers developed a rechargeable alkaline zinc-sulfur flow battery using eco-friendly zinc and sulfur. A novel nickel-based electrode significantly boosted voltage efficiency from 32% to 78%.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Rechargeable batteries are crucial for grid-scale energy storage.
- Developing sustainable and cost-effective battery chemistries is essential.
- Aqueous alkaline zinc-sulfur systems offer potential but face challenges like low voltage efficiency.
Purpose of the Study:
- To demonstrate a rechargeable aqueous alkaline zinc-sulfur flow battery.
- To improve the voltage efficiency of the zinc-sulfur system.
- To utilize environmentally friendly materials for energy storage.
Main Methods:
- Fabrication of a rechargeable aqueous alkaline zinc-sulfur flow battery.
- Utilizing zinc and sulfur as active materials.
- Developing a nickel-based electrode through a two-step process to mitigate sulfur redox reaction polarization.
Main Results:
- Successful demonstration of a rechargeable aqueous alkaline zinc-sulfur flow battery.
- Significant improvement in voltage efficiency from 32% to 78% at 10 mA cm-2.
- Reduced polarization of the sulfur redox reaction attributed to the nickel-based electrode.
Conclusions:
- The developed nickel-based electrode effectively enhances the performance of aqueous alkaline zinc-sulfur flow batteries.
- This advancement offers a promising pathway towards sustainable and efficient large-scale energy storage solutions.
- The use of abundant and environmentally benign zinc and sulfur materials makes this system highly attractive.
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