Synergistic Strategy of Targeted Capture and Potential Responsive Release for High‐Performance Zinc‐Iodine Batteries

Synergistic Strategy of Targeted Capture and Potential Responsive Release for High‐Performance Zinc‐Iodine Batteries

Advanced Materials

10.1002/adma.202516182

https://doi.org/10.1002/adma.202516182

Hanyu Wen, Bosi Yin, Haokun Wen, Ying Sun, Jiazhuo Li, Hui Li, Zhi Gen Yu, Siwen Zhang, Yong‐Wei Zhang, Tianyi Ma

Electrical and Electronic Engineering

13 December 2025

Wen, H., Yin, B., Wen, H., Sun, Y., Li, J., Li, H., Yu, Z. G., Zhang, S., Zhang, Y., & Ma, T. (2025). Synergistic Strategy of Targeted Capture and Potential Responsive Release for High‐Performance Zinc‐Iodine Batteries. Advanced Materials. Portico. https://doi.org/10.1002/adma.202516182

Abstract: The shuttle effect, arising from the dissolution and migration of polyiodide species, severely hinders the practical application of high-energy-density zinc-iodine (Zn-I2) batteries. Conventional carbon-based cathode materials, relying on weak physical adsorption, fail to effectively confine iodine species. To address this issue, we propose a synergistic strategy that integrates targeted iodide ion capture with potential-responsive I- release of I- upon reduction of Bi3+ to Bi at a lower potential than I2 reduction, enabling a dynamic and directional capture-release process. This methodology was validated through ex situ spectroscopic analysis and DFT calculations. This decoupled mechanism suppresses polyiodide formation and ensures efficient cathode reversibility. The incorporation of Bi2O3 also introduces an additional redox couple, contributing extra capacity to the battery. This battery simultaneously maintains the high stability inherent to traditional single-electron conversion mechanisms while achieving the highest specific capacity ever reported for iodine single-electron conversion in the field of carbon-based materials research. This work provides a universal design principle for manipulating iodine electrochemistry, paving the way for high-energy, long-lifespan halogen-based batteries.

Publisher Copyright

There was no specific funding for the research done

This is the peer reviewed version of the following article: Wen, H., Yin, B., Wen, H., Sun, Y., Li, J., Li, H., Yu, Z. G., Zhang, S., Zhang, Y., & Ma, T. (2025). Synergistic Strategy of Targeted Capture and Potential Responsive Release for High‐Performance Zinc‐Iodine Batteries. Advanced Materials. Portico. https://doi.org/10.1002/adma.202516182 , which has been published in final form at https://doi.org/10.1002/adma.202516182. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

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