A robust solid electrolyte interphase enabled by solvate ionic liquid for high-performance sulfide-based all-solid-state lithium metal batteries  

作　　者：Jingguang Yi Chong Yan Dan Zhou Li-Zhen Fan 

机构地区：[1]Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]School of electrical engineering and automation,Luoyang Institute of Science and Technology,Luoyang 471023,China [3]Shanxi Research Institute for Clean Energy,Tsinghua University,Taiyuan 030032,China

出　　处：《Nano Research》2023年第6期8411-8416,共6页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.U21A2080);Shanxi key research and development program(No.202102060301011);Key scientific research projects of colleges and universities in Henan Province(No.23A430044).

摘　　要：All-solid-state lithium metal batteries(ASSLMBs)that incorporate solid electrolyte(SE)and lithium metal anode suggest considerable potential in addressing the security concerns and energy density limitation of conventional lithium-ion batteries(LIBs).However,the practical application of ASSLMBs is always restricted by the interfacial instability of lithium metal anode/electrolyte and inevitable lithium dendrites propagation in SE.Herein,a solvate ionic liquid is adopted to modify the interface stability of lithium metal anode/electrolyte and inhibit the growth of lithium dendrites via an in-situ formation of a robust solid electrolyte interphase(SEI)on the surface of lithium metal anode.Consequently,the ASSLMBs assembled with Li_(6)PS_(5)Cl(LPSCl)electrolyte,lithium metal anode that protected by robust SEI layer,and LiNbO_(3)@NCM622 cathode exhibit high initial capacity of 126.5 mAh·g^(−1)and improved cycling stability with a capacity retention of 80.3%over 60 cycles at 0.1 C.This work helps to provide a facile route for the design of robust SEI in the application of ASSLMBs.

关 键 词：all-solid-state lithium metal batteries solvate ionic liquid robust solid electrolyte interphase Li_(6)PS_(5)Cl(LPSCl)electrolyte 

分 类 号：TM912[电气工程—电力电子与电力传动] TB383.2[一般工业技术—材料科学与工程]