Issue 11, 2024

Hydrogel-stabilized zinc ion batteries: progress and outlook

Abstract

Aqueous zinc-ion batteries (ZIBs) offer numerous advantages, such as high energy density, enhanced safety, and low cost, making them an ideal choice for energy storage and conversion applications in the “post-lithium” era. Hydrogel electrolytes, as the key component of flexible ZIBs, combine the ionic conductivity of traditional water electrolytes with the dimensional stability of solid polymer electrolytes. However, it remains a challenge to design comprehensive and appropriate hydrogel electrolytes to provide flexible ZIBs with good reversibility and versatility. This review discusses the engineering design of hydrogel electrolytes required for flexible ZIBs from the viewpoint of an electrolyte designer. The basic properties of the hydrogel electrolytes, zinc anodes, cathodes and electrolyte stabilization effects are described in detail. Furthermore, we explore the various challenges faced by hydrogel electrolytes and propose corresponding strategies. Finally, the review offers insights into the future development of hydrogel-stabilized ZIBs.

Graphical abstract: Hydrogel-stabilized zinc ion batteries: progress and outlook

Article information

Article type
Tutorial Review
Submitted
26 3月 2024
Accepted
30 4月 2024
First published
01 5月 2024

Green Chem., 2024,26, 6404-6422

Hydrogel-stabilized zinc ion batteries: progress and outlook

L. Li, S. Jia, S. Yue, C. Wang, H. Qiu, Y. Ji, M. Cao and D. Zhang, Green Chem., 2024, 26, 6404 DOI: 10.1039/D4GC01465K

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