A surface engineering strategy for the stabilization of zinc metal anodes with montmorillonite layers toward long-life rechargeable aqueous zinc ion batteries  

作　　者：Wenbo Wang Ruifeng Xu Xu Zhang Peiyu Wang Bao Yang Bingjun Yang Juan Yang Kailimai Su Pengjun Ma Yanan Deng Xianfeng Fan Wanjun Chen 

机构地区：[1]Key Laboratory for Electronic Materials,College of Electrical Engineering,Northwest Minzu University,Lanzhou 730000,Gansu,China [2]Resource Chemistry and Energy Materials Research Center,State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,University of Chinese Academy of Sciences,Lanzhou 730000,Gansu,China [3]Institute for Materials and Processes,School of Engineering,University of Edinburgh,Mayfield Road,Edinburgh EH93JL,UK

出　　处：《Journal of Energy Chemistry》2025年第1期94-105,共12页能源化学(英文版)

基　　金：National Natural Science Foundation of China(Grant No.22005318,22379152);Western Young Scholars Foundations of Chinese Academy of Sciences;Lanzhou Youth Science and Technology Talent Innovation Project(Grant No.2023-NQ-86,No.2023-QN-96);Lanzhou Chengguan District Science and Technology Plan Project(Grant No.2023-rc-4,2022-rc-4);Collaborative Innovation Alliance Fund for Young Science and Technology Worker(Grant No.HZJJ23-7);National Nature Science Foundations of Gansu Province(Grant No.21JR11RA020);Fundamental Research Funds for the Central Universities(Grant No.31920220073,31920230128)。

摘　　要：Rechargeable aqueous zinc-ion batteries(AZIBs)exhibit appreciable potential in the domain of electrochemical energy storage.However,there are serious challenges for AZIBs,for instance zinc dendrite growth,hydrogen evolution reaction(HER),and corrosion side reactions.Herein,we propose a surface engineering modification strategy for coating the montmorillonite(MMT)layer onto the surface of the Zn anode to tackle these issues,thereby achieving high cycling stability for rechargeable AZIBs.The results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions migration,facilitating the reaction kinetics of zinc ions.Density functional theory(DFT)calculations and water contact angle(CA)tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn^(2+)and better hydrophobicity than the bare Zn anode,thereby achieving excellent cycling stability.Moreover,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling over 5600 h at 0.5 mA cm^(-2)and 0.125 m A h cm^(-2),even exceeding 1800 h long cycling under harsh conditions of 5 m A cm^(-2)and 1.25 m A h cm^(-2).The MMT@Zn||V_(2)O_(5)full cell reaches over 3000 cycles at 2 A g^(-1)with excellent rate capability.Therefore,this surface engineering modification strategy for enhancing the electrochemical performance of AZIBs represents a promising application.

关 键 词：Surface engineering strategy Montmorillonite layer Protection mechanism of Zn anode Cycling stability Aqueous zincionbatteries 

分 类 号：TG1[金属学及工艺—金属学]