Polar-Nonpolar Synergy Toward High-Performance Aqueous Zinc-Iodine Batteries.

ABSTRACT: Aqueous zinc-iodine batteries (AZIBs) hold great promise for large-scale energy storage due to their inherent safety, cost-effectiveness, and environmental sustainability. However, their practical application is hindered by the sluggish redox kinetics of iodine species and the "shuttle effect" of polyiodides, both of which degrade cycling stability and capacity retention. Herein, a "polar-nonpolar strategy" is proposed for the first time, which couples nonpolar porous carbon (PC) as the iodine host with highly polar zinc oxide (ZnO) as separator modification materials. Specifically, the PC host leverages its porous structure and nonpolar properties to accommodate and immobilize iodine, simultaneously enhancing the conductivity of the cathode. Meanwhile, the polar ZnO on the separator accel

SUBMITTER: Zhu L 

PROVIDER: S-EPMC11962694 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature