Highly-chlorinated inert and robust interphase without mineralization of oxide enhancing high-rate Li metal batteries  

作　　者：Long Li Kang Yang Chenpeng Xi Mengchao Li Borong Li Gui Xu Yuanbin Xiao Xiancai Cui Zhiliang Liu Lingyun Li Yan Yu Chengkai Yang 

机构地区：[1]Key Laboratory of Advanced Materials Technologies,International(HongKong Macao and Taiwan)Joint Laboratory on Advanced Materials Technologies,School of Materials Science and Engineering,Fuzhou University,Fuzhou 350108,China [2]College of Material Sciences and Chemical Engineering,Harbin Engineering University,Harbin 150001,China

出　　处：《Chinese Chemical Letters》2024年第6期239-243,共5页中国化学快报（英文版）

基　　金：supported primarily by National Natural Science Foundation of China(Nos.22109025,51972061);National Key Research and Development Program of China(No.2020YFA0710303);Natural Science Foundation of Fujian Province,China(No.2021J05121)。

摘　　要：Side reactions and dendrite growth triggered by the unstable interface and inhomogeneous deposition have become the biggest obstacle to the commercialization for lithium metal batteries.In this study,a highly-chlorinated organic-inorganic hybrid interfacial protective layer is developed by rationally tuning the interfacial passivation and robustness to achieve the convenient and efficient Li metal anode.The polyvinyl chloride(PVC)can effectively resist water and oxygen,which is confirmed by density functional theory.The organic-dominant solid electrolyte interphases(SEI)with lithium chloride are investigated by the X-ray photoelectron spectroscopy(XPS)with little mineralization of oxide,such as Li_(2)O and Li_(2)CO_(3).With such artificial SEI,a uniform and dense lithium deposition morphology are formed and an ultra-long stable cycle of over 500 h are achieved even at an ultra-high current density of 10 m A/cm^(2).Moreover,the simple and convenient protected anode also exhibits excellent battery stability when paired with the LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)and LiFePO_(4)(LFP)cathode,showing great potential for the commercial application of lithium metal batteries.

关 键 词：Highly-chlorinated Water/oxygen resistance Stable interphase Dendrite-free lithium metal batteries High-rate 

分 类 号：TM912[电气工程—电力电子与电力传动] O646[理学—物理化学]