In-situ construction of high-mechanical-strength and fast-ion-conductivity interphase for anode-free Li battery

作     者：Yangfan Lin Juner Chen Han Zhang Jianhui Wang Yangfan Lin;Juner Chen;Han Zhang;Jianhui Wang

作者机构：Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang ProvinceSchool of EngineeringWestlake UniversityHangzhou 310024ZhejiangChina Institute of Advanced TechnologyWestlake Institute for Advanced StudyHangzhou 310024ZhejiangChina Department of ChemistryZhejiang UniversityHangzhou 310027ZhejiangChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2023年第80卷第5期

页      面：207-214,I0006页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China(21975207,52202303) the Westlake Education Foundation,and the Zhejiang Provincial Natural Science Foundation of China(LQ21B030006) 

主　　题：Anode-free Li battery Solid electrolyte interphase Additive Lithiu mnitrate Ethylene sulfite 

摘      要：The solid electrolyte interphase(SEI)with strong mechanical strength and high ion conductivity is highly desired for Li metal batteries,especially for harsh anode-free ***,we report a pragmatic approach to the in-situ construction of high-quality SEI by applying synergistic additives of Li NO_(3)and ethylene sulfite(ES)in the *** obtained SEI exhibits a high average Young’s modulus(9.02GPa)and exchanging current density(4.59 mA cm^(-2)),which are 3.0 and 1.2 times as large as those using the sole additive of LiNO_(3),*** this improved SEI,Li-dendrite growth and side reactions are effectively suppressed,leading to an ultra-high Coulombic efficiency(CE)of 99.7%for Li plating and *** applying this improved electrolyte in full cells,it achieves a high capacity retention of 89.7%for over 150 cycles in a LiFePO_(4)||Li battery(~12 mg cm^(-2)cathode,50μm Li)and of 44.5%over 100 cycles in a LiFePO_(4)||Cu anode-free battery.