Synergistic“Anchor‑Capture”Enabled by Amino and Carboxyl for Constructing Robust Interface of Zn Anode  

作　　者：Zhen Luo Yufan Xia Shuang Chen Xingxing Wu Ran Zeng Xuan Zhang Hongge Pan Mi Yan Tingting Shi Kai Tao Ben Bin Xu Yinzhu Jiang 

机构地区：[1]School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,People’s Republic of China [2]ZJU‑Hangzhou Global Scientific and Technological Innovation Center,Zhejiang University,Hangzhou 311215,People’s Republic of China [3]State Key Laboratory of Fluid Power and Mechatronic Systems,Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province,School of Mechanical Engineering,Zhejiang University,Hangzhou 310027,People’s Republic of China [4]Institute of Science and Technology for New Energy,Xi’an Technological University,Xi’an 710021,People’s Republic of China [5]State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,Baotou 014030,People’s Republic of China [6]Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials,Department of Physics,Jinan University,Guangzhou 510632,Guangdong,People’s Republic of China [7]Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials,Hangzhou 311200,People’s Republic of China [8]Mechanical and Construction Engineering,Faculty of Engineering and Environment,Northumbria University,Newcastle upon Tyne NE18ST,UK

出　　处：《Nano-Micro Letters》2023年第11期265-280,共16页纳微快报（英文版）

基　　金：supported by National Key R&D Program(2022YFB2502000);Zhejiang Provincial Natural Science Foundation of China(LZ23B030003);the Fundamental Research Funds for the Central Universities(2021FZZX001-09);the National Natural Science Foundation of China(52175551).

摘　　要：While the rechargeable aqueous zinc-ion batteries(AZIBs)have been recognized as one of the most viable batteries for scale-up application,the instability on Zn anode–electrolyte interface bottleneck the further development dramatically.Herein,we utilize the amino acid glycine(Gly)as an electrolyte additive to stabilize the Zn anode–electrolyte interface.The unique interfacial chemistry is facilitated by the synergistic“anchor-capture”effect of polar groups in Gly molecule,manifested by simultaneously coupling the amino to anchor on the surface of Zn anode and the carboxyl to capture Zn^(2+)in the local region.As such,this robust anode–electrolyte interface inhibits the disordered migration of Zn^(2+),and effectively suppresses both side reactions and dendrite growth.The reversibility of Zn anode achieves a significant improvement with an average Coulombic efficiency of 99.22%at 1 mA cm^(−2)and 0.5 mAh cm^(−2)over 500 cycles.Even at a high Zn utilization rate(depth of discharge,DODZn)of 68%,a steady cycle life up to 200 h is obtained for ultrathin Zn foils(20μm).The superior rate capability and long-term cycle stability of Zn–MnO_(2)full cells further prove the effectiveness of Gly in stabilizing Zn anode.This work sheds light on additive designing from the specific roles of polar groups for AZIBs.

关 键 词：Zn anode–electrolyte interface Polar groups Synergistic“anchor-capture”effect Side reactions Dendrite growth 

分 类 号：TM912[电气工程—电力电子与电力传动]