High donor-number and low content electrolyte additive for stabilizing zinc metal anode

作     者：Yuxin Gong Ruifan Lin Bo Wang Huaizheng Ren Lei Wang Han Zhang Jianxin Wang Deyu Li Yueping Xiong Dianlong Wang Huakun Liu Shixue Dou 

作者机构：MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageState Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China Institute of Energy Material ScienceUniversity of Shanghai for Science and TechnologyShanghai 200093China 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2024年第95卷第8期

页      面：626-635,I0014页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China[51874110 and 51604089] the Natural Science Foundation of Heilongjiang Province[YQ2021B004] the Open Project of the State Key Laboratory of Urban Water Resource and Environment[QA202138] the Fundamental Research Funds for the Central Universities[HIT.DZJJ.2023055] 

主　　题：Aqueous zinc ion batteries Zinc anode Electrolyte additives Donor number Zinc dendrites 

摘      要：The aqueous zinc ion batteries(AZIBs)are thought as promising competitors for electrochemical energy storage,though their wide application is curbed by the uncontrollable dendrite growth and gas evolution side ***,to stabilize both zinc anodes and water molecules,we developed a modified electrolyte by adding a trace amount of N,N-diethylformanmide(DEF)into the ZnSO_(4)electrolyte for the first time in zinc ion *** effectiveness of DEF is predicted by the comparison of donor number and its preferential adsorption behavior on the zinc anode is further demonstrated by several spectroscopy characterizations,electrochemical methods,and molecular dynamics *** modified electrolyte with 5%*** content can ensure a stable cycling life longer than 3400 h of Zn‖Zn symmetric cells and an ultra-reversible Zn stripping/plating process with a high coulombic efficiency of 99.7%.The Zn‖VO_(2)full cell maintains a capacity retention of 83.5%and a 104 mA h g^(-1)mass capacity after *** work provides insights into the role of interfacial adsorption behavior and the donor number of additive molecules in designing low-content and effective aqueous electrolytes.