Phosphorylation Regulation Promotes Bidirectional Dynamic Adaptive Interface for Achieving Stable Zn–I <sub>2</sub> Batteries
Zhenxin Lin, Hanlin Ding, Xiaoting Lin, Minghui Ye, Zhipeng Wen, Yongchao Tang, Xiaoqing Liu, Yufei Zhang, Chengchao Li
Abstract
Abstract Unstable electrode–electrolyte interfaces resulting from severe cathodic polyiodide shuttling, anodic parasitic corrosion reactions, and dendrite growth significantly impede the performance of zinc–iodine (Zn–I 2 ) batteries. Here, phosphorylation regulation is proposed to create dynamically adaptive water‐lean interfaces for long‐term Zn–I 2 batteries. Phosphorylation reinforces the adaptive interface construction through the increased adsorption capability on the Zn anode and introduces a dynamic pH‐balancing capability while simultaneously offering extra sites for the real‐time capture of polyiodide intermediates at the cathode. Consequently, extended durability (4400 h at 5 mA cm −2 and 1 mAh cm −2 ), boosted coulombic efficiency (99.8% for 7500 cycles), and ultralong cycling for 8000 cycles at a high loading of 10 mg cm −2 were maintained. These findings provide crucial insights into the optimization of adaptive interfaces through phosphorylation regulation for high‐performance Zn–I 2 batteries.