Suppressing by-product via stratified adsorption effect to assist highly reversible zinc anode in aqueous electrolyte

作     者：Miao Zhou Shan Guo Guozhao Fang Hemeng Sun Xinxin Cao Jiang Zhou Anqiang Pan Shuquan Liang Miao Zhou;Shan Guo;Guozhao Fang;Hemeng Sun;Xinxin Cao;Jiang Zhou;Anqiang Pan;Shuquan Liang

作者机构：School of Materials Science and EngineeringCentral South UniversityChangsha 410083HunanChina Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan ProvinceCentral South UniversityChangsha 410083HunanChina 

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

年 卷 期：2021年第30卷第4期

页      面：549-556页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(Grant no.51932011)。 

主　　题：Zn anode Artificial protective film Stratified adsorption Interfacial reaction Zn4SO4(OH)6·H2O by-products 

摘      要：The development of promising zinc anodes mainly suffers from their low plating/stripping coulombic efficiencies when using aqueous electrolyte,which are mainly associated with the interfacial formation of irreversible by-products.It is urgent to develop technologies that can solve this issue fundamentally.Herein,we report an artificial Sc_(2)O_(3) protective film to construct a new class of interface for Zn anode.The density functional theory simulation and experimental results have proven that the interfacial side reaction was inhibited via a stratified adsorption effect between this artificial layer and Zn anode.Benefiting from this novel structure,the Sc_(2)O_(3)-coated Zn anode can run for more than 100 cycles without short circuit and exhibit low voltage hysteresis,and the coulombic efficiency increases by 1.2%.Importantly,it shows a good application prospect when matched with two of popular manganese-based and vanadium-based cathodes.The excellent electrochemical performance of the Sc_(2)O_(3)-coated Zn anode highlights the importance of rational design of anode materials and demonstrates a good way for developing high-performance Zn anodes with long lifespan and high efficiency.