Electrode/Electrolyte Interfacial Chemistry Modulated by Chelating Effect for High-Performance Zinc Anode

作     者：Chuanlin Li Guangmeng Qu Xixi Zhang Chenggang Wang Xijin Xu Chuanlin Li;Guangmeng Qu;Xixi Zhang;Chenggang Wang;Xijin Xu

作者机构：School of Physics and TechnologyUniversity of JinanJinan 250022China School of Chemistry and Chemical EngineeringShandong UniversityJinan 250100China 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2024年第7卷第3期

页      面：93-99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 Joint Funds of the National Natural Science Foundation of China(No.U22A20140) the Independent Cultivation Program of Innovation Team of Ji'nan City(No.2019GXRC011) the National Natural Science Foundation of China(No.62001189) 

主　　题：chelating effect in-situ SEI ultra-high current density Zn anodes 

摘      要：Although Zn metal has been regarded as the most promising anode for aqueous batteries,its practical application is still restricted by side reactions and dendrite ***,an in-situ solid electrolyte interphase(SEI)film formed on the interface of electrode/electrolyte during the plating/stripping of zinc anodes by introducing trace amounts of multidentate ligand sodium diethyldithiocarbamate(DDTC)additive into 1 M ZnSO_(4).The synergistic effect of in-situ solid electrolyte interphase forming and chelate effect endows Zn^(2+)with uniform and rapid interface-diffusion kinetics against dendrite growth and surface side *** a result,the Zn anode in 1 M ZnSO_(4)+DDTC electrolytes displays an ultra-high coulombic efficiency of 99.5%and cycling stability(more than 2000 h),especially at high current density(more than 600 cycles at 40 mA cm^(-2)).Moreover,the Zn//MnO_(2)full cells in the ZnSO_(4)+DDTC electrolyte exhibit outstanding cyclic stability(with 98.6%capacity retention after 2000 cycles at 10 C).This electrode/electrolyte interfacial chemistry modulated strategy provides new insight into enhancing zinc anode stability for high-performance aqueous zinc batteries.