“Tennis racket”hydrogel electrolytes to synchronously regulate cathode and anode of zinc-iodine batteries  

作　　者：Tian-Yi Yang Ting-Ting Su Hai-Long Wang Kun Li Wen-Feng Ren Run-Cang Sun 

机构地区：[1]Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials,Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery,College of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,Liaoning,China [2]Yulin Innovation Institute of Clean Energy,Yulin 719053,Shaanxi,China [3]State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology,Shandong Academy of Sciences,Jinan 250353,Shandong,China

出　　处：《Journal of Energy Chemistry》2025年第3期454-462,共9页能源化学(英文版)

基　　金：financially supported by the Energy Revolution S&T Program of Yulin Innovation Institute of Clean Energy(E411060316);the NSFC-CONICFT Joint Project(51961125207);the Special Fund(2024)of Basic Scientific Research Project at Undergraduate University in Liaoning Province(LJ212410152056);the Foundation(GZKF202301)of State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology,Shandong Academy of Sciences。

摘　　要：Aqueous zinc-iodine(Zn-I_(2))batteries show great potential as energy storage candidates due to their high-safety and low-cost,but confronts hydrogen evolution reaction(HER)and dendrite growth at anode side and polyiodide shuttling at cathode side.Herein,"tennis racket"(TR)hydrogel electrolytes were prepared by the co-polymerization and co-blending of polyacrylamide(PAM),sodium lignosulfonate(SL),and sodium alginate(SA)to synchronously regulate cathode and anode of Zn-I_(2)batteries."Gridline structure"of TR can induce the uniform transportation of Zn^(2+)ions through the coordination effect to hinder HER and dendrite growth at anode side,as well as hit I_(3)^(-)ions as"tennis"via the strong repulsion force to avoid shuttle effect at cathode side.The synergistic effect of TR electrolyte endows Zn-Zn symmetric battery with high cycling stability over 4500 h and Zn-I_(2)cell with the stably cycling life of 15000 cycles at5 A g^(-1),outperforming the reported works.The practicability of TR electrolyte is verified by flexible Zn-I_(2)pouch battery.This work opens a route to synchronously regulate cathode and anode to enhance the electrochemical performance of Zn-I_(2)batteries.

关 键 词：Tennis racket Hydrogele lectrolyte Interface regulation Zinc anode Zinc-iodide batteries 

分 类 号：TM911.1[电气工程—电力电子与电力传动]