Bilayer separator enabling dendrite-free zinc anode with ultralong lifespan >5000 h  

作　　者：Lu Wang Feifei Wang Zhe Ding Yingxin Liu Ziyi Zhang Chunpeng Yang Kian Ping Loh Quan-Hong Yang 

机构地区：[1]Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou,350207,China [2]Nanoyang Group,State Key Laboratory of Chemical Engineering,School of Chemical Engineering and Technology,Tianjin University,Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin,300072,China [3]Haihe Laboratory of Sustainable Chemical Transformations,Tianjin,300192,China [4]Department of Chemistry,National University of Singapore,117543,Singapore [5]Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100190,China

出　　处：《Green Energy & Environment》2024年第4期771-776,共6页绿色能源与环境（英文版）

基　　金：supported by grants from the National Key Research and Development Program of China(No.2021YFF0500600);the Haihe Laboratory of Sustainable Chemical Transformations,and the Fundamental Research Funds for the Central Universities.We appreciate Neware Technology Co.,Ltd for their battery test systems in the TJU Nanoyang-Neware Joint Laboratory for Energy Innovation.

摘　　要：Aqueous zinc(Zn)batteries with Zn metal anodes are promising clean energy storage devices with intrinsic safety and low cost.However,Zn dendrite growth severely restricts the use of Zn anodes.To effectively suppress Zn dendrite growth,we propose a bilayer separator consisting of commercial butter paper and glassfiber membrane.The dense cellulose-based butter paper(BP)with low zincophilicity and high mechanical properties prevents the pore-filling behavior of deposited Zn and related separator piercing,effectively suppressing the Zn dendrite growth.As a result,the bilayer separators endow the ZnjjZn symmetrical batteries with a superlong cycling life of Zn anodes(over 5000 h)at 0.5 mA cm^(-2) and the full batteries enhanced capacity retention,demonstrating the advancement of the bilayer separator to afford excellent cyclability of aqueous metal batteries.

关 键 词：Zn battery Bilayer separator Butter paper Zn metal anode Zn dendrite 

分 类 号：TM91[电气工程—电力电子与电力传动]