A widely used nonionic surfactant with desired functional groups as aqueous electrolyte additives for stabilizing Zn anode  

作　　者：Yue-Xian Song Xiao-Feng Wang Cai-Bin Liu Kai-Xuan Guo Xu-Huan Guo Xiao-Bin Zhong Yao-Hui Zhang Kai Wang Hui-Juan Guo Li-Xin Zhang Jun-Fei Liang 

机构地区：[1]School of Energy and Power Engineering,North University of China,Taiyuan 030051,China [2]Key Laboratory of Green Chemical Process of Ministry of Education,Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology,School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology,Wuhan 430073,China [3]Shanxi Provincial Key Laboratory for High Performance Battery Materials and Devices,Taiyuan 030051,China

出　　处：《Rare Metals》2024年第8期3692-3701,共10页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos.22102157 and U1910208);the Natural Science Foundation of Shanxi Province of China (Nos.20210302124097 and 20210302124663);the Opening Foundation of Shanxi Provincial Key Laboratory for HighPerformance Battery Materials and Devices (No.2022HPBMD02002);the Graduate Student Innovation Program of North University of China (No.20221871);the Natural Science Foundation of Hubei Province of China (No.2022CFB577)。

摘　　要：Aqueous Zn-ion batteries(AZIBs) have emerged as potential candidates for Li-ion batteries due to their intrinsic safety and high capacity.However,metallic Zn anodes encounter dendrite growth and water-induced corrosion,rendering poor stability and severe irreversibility at the electrode/electrolyte interface during cycling.To stabilize the Zn anode,we report a low-cost and effective nonionic surfactant,Tween-20 polymer,as an electrolyte additive for AZIBs.For Tween-20,sequential oxyethylene groups tended to be preferentially adsorbed on the Zn electrode to form a shielding layer for regulating uniform Zn nucleation.Moreover,the hydrophobic hendecyl chains prevented H_(2)O-induced corrosion on the Zn anode surface.Benefiting from the desired functional groups,when only trace amounts of Tween-20(0.050 g·L^(-1)) were used,the Zn anode displayed good cycling stability over 2170 h at10 mA·cm^(-2) and a high average Coulombic efficiency of98.94% over 1000 cycles.The Tween-20 polymer can also be effectively employed in MnO_(2)/Zn full batteries.Considering their toxicity,price and amount of usage,these surfactant additives provide a promising strategy for realizing the stability and reversibility of high-performance Zn anodes.

关 键 词：Zn anode Dendrite growth Tween-20 polymer Surfactant additive Aqueous electrolyte 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ423[化学工程] O646[理学—物理化学]