Integrating Electric Ambipolar Effect for High-Performance Zinc Bromide Batteries  

作　　者：Wenda Li Hengyue Xu Shanzhe Ke Hongyi Zhang Hao Chen Gaijuan Guo Xuanyi Xiong Shiyao Zhang Jianwei Fu Chengbin Jing Jiangong Cheng Shaohua Liu 

机构地区：[1]State Key Laboratory of Precision Spectroscopy,Engineering Research Center of Nanophotonics and Advanced Instrument(Ministry of Education),School of Physics and Electronic Science,East China Normal University,Shanghai 200241,People’s Republic of China [2]Department of Chemistry,Tsinghua University,Haidian District,Beijing 100084,People’s Republic of China [3]School of Materials Science and Engineering,Xinjiang University,666 Shengli Road,Urumqi City 830046,People’s Republic of China [4]School of Materials Science and Engineering,Zhengzhou University,75 Daxue Road,Zhengzhou 450052,People’s Republic of China [5]State Key Lab of Transducer Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第6期382-396,共15页纳微快报(英文版)

基　　金：provided by the National Natural Science Foundation of China(Grant No.52373208 and 61831021);the ECNU Academic Innovation Promotion Program for Excellent Doctoral Students(YBNLTS2024-021).

摘　　要：The coupling of fast redox kinetics,high-energy density,and prolonged lifespan is a permanent aspiration for aqueous rechargeable zinc batteries,but which has been severely hampered by a narrow voltage range and suboptimal compatibility between the electrolytes and electrodes.Here,we unprecedentedly introduced an electric ambipolar effect for synergistic manipulation on Zn^(2+)ternary-hydrated eutectic electrolyte(ZTE)enabling high-performance Zn-Br_(2)batteries.The electric ambipolar effect motivates strong dipole interactions among hydrated perchlorates and bipolar ligands of L-carnitine(L-CN)and sulfamide,which reorganized primary cations solvation sheath in a manner of forming Zn[(L-CN)(SA)(H_(2)O)_(4)]^(2+)configuration and dynamically restricting desolvated H2O molecules,thus ensuring a broadened electrochemical window of 2.9 V coupled with high ionic conductivity.Noticeably,L-CN affords an electrostatic shielding effect and an in situ construction of organic-inorganic interphase,endowing oriented Zn anode plating/stripping reversibly for over 2400 h.Therefore,with the synergy of electro/nucleophilicity and exceptional compatibility,the ZTE electrolyte dynamically boosts the conversion redox of Zn-Br_(2)batteries in terms of high specific capacity and stable cycling performance.These findings open a window for designing electrolytes with synergetic chemical stability and compatibility toward advanced zinc-ion batteries.

关 键 词：Electric ambipolar effect Hydrated eutectic electrolyte Electrostatic shielding Zinc bromide batteries 

分 类 号：O62[理学—有机化学]