Non-coordinating charge transfer enables ultrafast desolvation of hydrated zinc ions in the outer Helmholtz layer for stable aqueous Zn metal batteries

作     者：Xiuli Guo Qiaoling Peng Rui Yang Gengyou Cao Jianfeng Wen Kyungsoo Shin Ye Zheng Sarayut Tunmee Caineng Zou Yongping Zheng Xiaolong Zhou Yongbing Tang 

作者机构：Advanced Energy Storage Technology Research CenterShenzhen Institutes of Advanced TechnologyChinese Academy of Sciences Nano Science and Technology InstituteUniversity of Science and Technology of China Shenzhen College of Advanced TechnologyUniversity of Chinese Academy of Sciences Synchrotron Light Research Institute (Public Organization) Petro China Shenzhen New Eergy Research Institute Co. LTD. 

出 版 物：《National Science Review》 (国家科学评论(英文版))

年 卷 期：2025年第12卷第4期

页      面：282-293页

核心收录：

学科分类：0808[工学-电气工程] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Key R&D Program of China (2022YFB2402600) the National Natural Science Foundation of China (52125105, 52272054, 52061160484 and52173242) the Shenzhen Science and Technology Planning Project (JCYJ20241202125204005, GJHZ20220913142809019,JSGG20220831104004008, SGDX20230116092055008,KJZD20230923115227054 and JCYJ20220531100405012) the Guangdong Basic and Applied Basic Research Foundation (2019B1515120005 and 2024A1515011670) the National Science,Research and Innovation Fund via the Program Management Unit for Human Resources & Institutional Development,Research and Innovation (B49G680115) 

主　　题：Fermi-level engineering non-coordinating charge transfer fast desolvation nitrogen-doped amorphous carbon aqueous Zn metal batteries 

摘      要：The formation of a strong coordination structure,[Zn（H2O）6]2+often increases direct contact between the solvated H2O and Zn anodes in the inner Helmholtz layer,which exacerbates undesirable side reactions and dendrite growth,hindering the practical application of aqueous Zn metal ***,we show that the solvated H2O can be effectively minimized by an artificial solid electrolyte interphase（SEI） consisting of highly nitrogen-doped amorphous carbon（NC） and perfluorosulfonic acid polymer（Nafion）.Theoretical and experimental analyses reveal that NC raises the Fermi level of the composite SEI and activates the non-coordinating charge transfer from the SEI to [Zn（H2O）6]2+,which leads to ultrafast desolvation of hydrated Zn-ions in the outer Helmholtz layer;while the Nafion framework ensures selective transport channels for Zn ***,the derived NC-Nafion@Zn symmetric cell exhibits a long lifespan(3400 h,1 mA cm-2;2000 h,5 mA cm-2);moreover,the NC-Nafion@Zn//Mn4O3-carbon nano tubes full battery delivers ultralong cycling stability of 9300 cycles at 2 A g-1with a high retention of 91.3%.