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Suppressing interfacial side reactions of zinc metal anode via isolation effect toward high-performance aqueous zinc-ion batteries

查看全文 作　　者：Feng [1]Tao;Kaijia [1]Feng;Yong [1]Liu;Jiangzhuo [2]Ren;Yi [1]Xiong;Chengbo [3]Li;Fengzhang [1]Ren 高影响力作者 机构地区：[1]School of Materials Science and Engineering,Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology,Henan University of Science and Technology,Luoyang 471023,China;[2]School of Construction Machinery,Chang’an University,Xi’an 710064,China;[3]School of Materials Science and Engineering,Anyang Institute of Technology,Anyang 455000,China高影响力机构 出　　处：《Nano Research》索引2023年第16卷第5期,共9页高影响力期刊 基　　金：the National Key Research and Development Program of China(No.2020YFB1713500);Open Fund of State Key Laboratory of Advanced Refractories(No.SKLAR202210);the Student Research Training Plan of Henan University of Science and Technology(Nos.2021026 and 2021035);the Undergraduate Innovation and Entrepreneurship Training Program of Henan Province(No.S202110464005). 摘　　要：Aqueous zinc(Zn)-ion batteries(AZIBs)are one of the most promising large-scale energy storage devices because of the excellent features of zinc metal anodes,including high theoretical capacity(5,855 mAh·cm^(–3)and 820 mAh·g^(−1)),high safety,and natural abundance.Nevertheless,the large-scale applications of AZIBs are mainly limited by the severe interfacial side reactions of zinc metal anodes,which results in low plating/stripping Coulombic efficiency and poor cycling stability.To address this issue,we report an artificial Ta_(2)O_(5)protective layer on zinc foil(Ta_(2)O_(5)@Zn)for suppressing side reactions during Zn deposition/stripping.The results of density functional theory calculation and experiments indicate that Ta_(2)O_(5)@Zn anode can inhibit the side reactions between the electrolyte and zinc anode through the isolation effect.Benefiting from this advantage,the symmetric cells with Ta_(2)O_(5)@Zn anode delivered an ultralong lifespan of 3,000 h with a low overpotential at 0.25 mA·cm^(−2)for 0.05 mAh·cm^(−2).Furthermore,the full cells consisting of Ta_(2)O_(5)@Zn anode and MnO_(2)or NH_(4)V_(4)O_(10)cathode all present outstanding electrochemical performance,indicating its high reliability in practical applications.This strategy brings new opportunities for the future development of rechargeable AZIBs. 关 键 词：zinc metal anode Ta_(2)O_(5)coating isolation effect interfacial side reactions electrochemical performance
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