Ambiently fostering solid electrolyte interphase for low-temperature lithium metal batteries  

作　　者：Jia-Yue Duan Jin-Xiu Chen Fang-Fang Wang Jin-Hao Zhang Xiao-Zhong Fan Liping Wang Yingze Song Wei Xia Yusheng Zhao Long Kong 

机构地区：[1]Frontiers Science Center for Flexible Electronics and Xi’an Institute of Flexible Electronics(IFE),Northwestern Polytechnical University,Xi’an 710129,Shaanxi,China [2]Department of Physics,Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen 518055,Guangdong,China [3]State Key Laboratory of Environment-Friendly Energy Materials,School of Materials Science and Engineering,Graphene Joint Innovation Centre,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China [4]Eastern Institute for Advanced Study,Eastern Institute of Technology,Ningbo 315201,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2023年第12期473-478,I0012,共7页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China (22379121);Shenzhen Foundation Research Fund granted by the Shenzhen Science and Technology Innovation Committee (JCYJ20220530112812028);Fundamental Research Funds for the Central Universities (G2022KY0606);Zhejiang Province Key Laboratory of Flexible Electronics Open Fund (No. 2023FE005)。

摘　　要：Despite being a leading candidate to meet stringent energy targets,lithium(Li) metal batteries(LMBs)face severe challenges at low temperatures such as dramatic increase in impedance,capacity loss and dendrite growth.Unambiguously fingerprinting rate-limited factors of low-temperature LMBs would encourage targeted approaches to promote performances.Herein,the charge transfer impedance across solid electrolyte interphase(SEI) is identified to restrict battery operation under low temperature,and we propose a facile approach on the basis of ambiently fostering SEI(af-SEI) to facilitate charge transfer.The concept of af-SEI stems from kinetic benefits and structural merits to construct SEI at ambient temperature over low temperature developed SEI that is temporally consuming to achieve steady state and that is structurally defective to incur dendrite growth.The af-SEI allows ionically conductive and morphologically uniform layer on the anode surface,which exhibits a lower resistance and induces an even deposition of Li in the subsequent low temperature battery operation.Armed with af-SEI,the LMBs deliver the improved rate performance and prolonged cycle life when subjected to low temperature cycling.This work unveils the underlying causes that limit low temperature LMB performances,and enlightens the facile test protocols to build up favorable SEI,beyond scope of material and morphology design.

关 键 词：Li matel batteries Ambiently fostering SEI Charge transfer impedance Low temperature kinetics 

分 类 号：TM912[电气工程—电力电子与电力传动] O646.1[理学—物理化学]