Safe and Stable Lithium Metal Batteries Enabled by an Amide-Based Electrolyte

作     者：Wanbao Wu Yiyang Bo Deping Li Yihong Liang Jichuan Zhang Miaomiao Cao Ruitian Guo Zhenye Zhu Lijie Ci Mingyu Li Jiaheng Zhang Wanbao Wu;Yiyang Bo;Deping Li;Yihong Liang;Jichuan Zhang;Miaomiao Cao;Ruitian Guo;Zhenye Zhu;Lijie Ci;Mingyu Li;Jiaheng Zhang

作者机构：Sauvage Laboratory for Smart MaterialsHarbin Institute of Technology(Shenzhen)Shenzhen 518055People’s Republic of China Research Centre of Printed Flexible ElectronicsSchool of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055People’s Republic of China School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055People’s Republic of China Department of ChemistryUniversity of IdahoMoscowID 83844‑2343USA 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2022年第14卷第3期

页      面：120-133页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(21905069,52002094) the Shenzhen Science and Technology Innovation Committee(JCYJ20180507183907224,KQTD20170809110344233) the Economic,Trade and Information Commission of Shenzhen Municipality through the Graphene Manufacture Innovation Center(201901161514) the Guangdong Province Covid-19 Pandemic Control Research Fund(2020KZDZX1220) the School Research Startup Expenses of Harbin Institute of Technology(Shenzhen)(DD29100027) 

主　　题：Amide-based electrolyte Nonflammable Inorganic/organic-rich solid electrolyte interphase Dendrite-free Lithium metal batteries 

摘      要：The formation of lithium dendrites and the safety hazards arising from flammable liquid electrolytes have seriously hindered the development of high-energy-density lithium metal ***,an emerging amide-based electrolyte is proposed,containing LiTFSI and butyrolactam in different molar ratios.1,1,2,2-Tetrafluoroethyl-2,2,3,3-tetrafluoropropylether and fluoroethylene carbonate are introduced into the amide-based electrolyte as counter solvent and *** well-designed amide-based electrolyte possesses nonflammability,high ionic conductivity,high thermal stability and electrochemical stability(4.7 V).Besides,an inorganic/organic-rich solid electrolyte interphase with an abundance of LiF,Li3N and Li-N-C is in situ formed,leading to spherical lithium *** formation mechanism and solvation chemistry of amide-based electrolyte are further inves-tigated by molecular dynamics simulations and density functional *** applied in Li metal batteries with LiFePO4 and LiMn2O4 cathode,the amide-based electrolyte can enable stable cycling performance at room temperature and 60℃.This study provides a new insight into the development of amide-based electrolytes for lithium metal batteries.