Recent Advances in Porous Cathode Hosts for Aqueous Zinc-Iodine Batteries.

Authors

Xianshi Yang, Jiajun Wan, Weihua Xu, Jing Xu, Huibing He

Published in

Chemistry (Weinheim an der Bergstrasse, Germany). Pages e71817. Oct 16, 2026. Epub Oct 16, 2026.

Abstract

Aqueous zinc-iodine batteries (Zn-I₂) are promising candidates for large-scale energy storage due to their high theoretical capacity, intrinsic safety, and cost-effectiveness. However, their practical performance is severely hindered by the intrinsically low conductivity of I₂ and its discharge products, accompanied by the notorious polyiodide shuttle effect and sluggish redox kinetics. These drawbacks collectively compromise the rate capability, cycling stability, and energy density. As the I₂ cathode plays an indispensable role, engineering porous cathode hosts with tailored pore architectures and surface chemistries has emerged as a decisive strategy to overcome these bottlenecks. This review summarizes recent advances in porous materials for Zn-I₂ battery cathodes, highlighting their applications as iodine hosts, including porous carbons and their composites, metal-organic frameworks (MOFs), porous organic frameworks (POFs). Special emphasis is placed on how pore architecture affects iodine confinement, polyiodide retention, mass transport, and redox kinetics. Finally, future directions for the design of high-performance porous iodine hosts are discussed. This review provides insightful guidelines for the development of next-generation high-performance Zn-I₂ batteries.

PMID:
42885564
Bibliographic data and abstract were imported from PubMed on 16 Oct 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.