Re-evaluating the nano-sized inorganic protective layer on Cu current collector for anode free lithium metal batteries  

作　　者：Shuo Zhang Haitao Liao Zhi-Qun Liu Chong Yan Jia-Qi Huang 

机构地区：[1]School of Materials Science&Engineering,Beijing Institute of Technology,Beijing 100081,China [2]Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing 100081,China [3]Wuxi Yiwen Microelectronics Technology Co.,Ltd.,Wuxi 214000,China [4]Shanxi Research Institute for Clean Energy,Tsinghua University,Taiyuan 030032,China

出　　处：《Chinese Chemical Letters》2024年第7期452-455,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Scientific Foundation of China(No.22379014);Shanxi key research and development program(No.202102060301011)。

摘　　要：Anode free lithium metal batteries(AF-LMBs)have conspicuous advantages both in energy density and the compatibility of battery manufacturing process.However,the limited cycle life of AF-LMBs is a crucial factor hindering its practical application.Fluorinated or nitride artificial inorganic solid electrolyte interphase(SEI)has been found as an effective method to prolong the lifespan of AF-LMBs.Herein,by investigating the impact of nano-sized inorganic gradient layers(LiF or Li3N)on initial Li deposition behavior,we notice that the Li^(+) diffusion barrier and the deposition morphology are highly depended on the thickness of inorganic layers.Thicker protective layers cause larger overpotential as well as more aggregated Li^(+) distribution.This study reveals that the ideal SEI should be synthesized thin and uniformly enough and uncontrollable artificial SEI can cause damage to the lifespan of AF-LMBs.

关 键 词：Anode free lithium metal battery Solid electrolyte interphase Nano-sized protective layer Lithium fluoride Li deposition behavior 

分 类 号：TM912[电气工程—电力电子与电力传动] TB383.1[一般工业技术—材料科学与工程]