Artificial cathode solid electrolyte interphase to endow highly stable lithium storage of FeF_(2) nanocrystals

作     者：Ming Chen Liang Zhao Xiaomin Li Xuejiao Liu Jiantao Zai Rongrong Qi Xuefeng Qian 陈明;赵亮;李晓敏;刘雪娇;宰建陶;戚嵘嵘;钱雪峰

作者机构：Shanghai Electrochemical Energy&Research Centre State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2022年第65卷第3期

页      面：629-636页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the Science and Technology Commission of Shanghai Municipality(20520710400,19JC1412600 and 18230743400) the National Natural Science Foundation of China(21771124 and 21901156) the Oceanic Interdisciplinary Program(SL2020MS020) the SJTU-Warwick Joint Seed Fund(2019/20)of Shanghai Jiao Tong University 

主　　题：FeF_(2)nanocrystals artificial PVDF-based CEI layer cyclic stability lithium-ion batteries 

摘      要：Iron difluoride(FeF_(2))is considered a highcapacity cathode material for lithium-ion ***,its specific capacity and stability are limited by the poor electrochemical kinetics of conversion ***,the conversion reaction is confined in a localized nanosized space by encapsulating FeF_(2) nanoparticles in polymer *** FeF_(2) nanocrystal-coated polyvinylidene fluoride-based layer(defined as Fe F_(2) @100%G-40%P)was synthesized by glucoseassisted in-situ gelatinization to construct an artificial cathode solid electrolyte interphase via a solvothermal *** to the improved kinetics of the localized conversion reaction,the obtained FeF_(2) @100%G-40%P electrodes show good cyclic stability(313mAhg^(-1) after 150 cycles at 100 mAg^(-1) ,corresponding to a retention of 80%)and a high rate performance(186.6 mAhg^(-1) at 500 mAg^(-1)).