Dielectric-ion-conductive ZnNb_(2)O_(6) layer enabling rapid desolvation and diffusion for dendrite-free Zn metal batteries  

作　　者：Haifeng Yang Jian Wang Panpan Zhang Xiaomin Cheng Qinghua Guan Jing Dong Bixian Chen Lujie Jia Jing Zhang Yongzheng Zhang Yunjian Liu Hongzhen Lin 

机构地区：[1]School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China [2]i-Lab&CAS Key Laboratory of Nanophotonic Materials and Devices,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,Jiangsu,China [3]Helmholtz Institute Ulm(HIU),Ulm D89081,Germany [4]School of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi,China [5]Karlsruhe Institute of Technology(KIT),Karlsruhe D76021,Germany [6]State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China

出　　处：《Journal of Energy Chemistry》2025年第1期693-701,共9页能源化学(英文版)

基　　金：National Key R&D Program of China (2021YFA1201503);National Natural Science Foundation of China (21972164, 22279161, 12264038, 22309144);Natural Science Foundation of Jiangsu Province (BK. 20210130);China Postdoctoral Science Foundation (2023M733189);Jiangsu Double-Innovation PhD Program in 2022 (JSSCBS20221241);Senior Talents Fund of Jiangsu University (5501220014);fellowship funding provided by the Alexander von Humboldt Foundation。

摘　　要：Rechargeable aqueous zinc-metal batteries (AZMBs) are promising candidates for large-scale energy storage systems due to their low cost and high safety.However,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn(H_(2)O)_(6)^(2+)solvation shell.Herein,learnt from self-generated solid electrolyte interphase (SEI) in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface (ZNB@Zn),acting as a rapid desolvation promotor.The zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical calculations.Consequently,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility (99.54%) even under high current density and depth of discharge conditions.Meanwhile,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g^(-1)and outstanding rate performance up to 10 A g^(-1).The large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.

关 键 词：Zn metal battery Dielectri cartificial layer Rapid ion diffusion Zincophilic diffusion Active water inhibition 

分 类 号：TM912[电气工程—电力电子与电力传动] O646[理学—物理化学]