"Proton-Iodine" Regulation of Protonated Polyaniline Catalyst for High-Performance Electrolytic Zn-I₂ Batteries.

ABSTRACT: Low-cost and high-safety aqueous Zn-I₂ batteries attract extensive attention for large-scale energy storage systems. However, polyiodide shuttling and sluggish iodine conversion reactions lead to inferior rate capability and severe capacity decay. Herein, a three-dimensional polyaniline is wrapped by carboxyl-carbon nanotubes (denoted as C-PANI) which is designed as a catalytic cathode to effectively boost iodine conversion with suppressed polyiodide shuttling, thereby improving Zn-I₂ batteries. Specifically, carboxyl-carbon nanotubes serve as a proton reservoir for more protonated -NH⁺ = sites in PANI chains, achieving a direct I⁰/I^- reaction for suppressed polyiodide generation and Zn corrosion. Attributing to this "proton-iodine" re

SUBMITTER: Liu M 

PROVIDER: S-EPMC12579043 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature