Solar Trap-Adsorption Photocathode for Highly Stable 2.4 V Dual-Ion Solid-State Iodine Batteries.

ABSTRACT: Rechargeable aqueous iodine-based electrochemical energy storage systems offer a cost-effective alternative to conventional alkali metal batteries for grid-scale applications. However, their practical deployment is hindered by sluggish iodine redox kinetics and the shuttle of polyiodides, which severely limit their lifespan. To address these challenges, a novel solid-state organic||I₂ battery leveraging a Co₃O₄-TiO₂ heterojunction photocathode is developed. By integrating a photo-assisted mechanism with an innovative device architecture, the system achieves accelerated iodine conversion kinetics, enhances iodide ion utilization, and enables a four-electron redox pathway. Theoretical calculation combined with electrochemical analysis reveals that

SUBMITTER: Zhang X 

PROVIDER: S-EPMC12548518 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature