Dendrite-Free All-Solid-State Lithium-Metal Battery by In-Situ Phase Transformation of Soft Carbon-Li3n Interface Layer

作     者：Yang, Ming Yang, Kaiqi Wu, Yujing Wang, Zhixuan Ma, Tenghuan Wu, Dengxu Yang, Li Xu, Jieru Lu, Pushun Peng, Jian Jiang, Zhiwen Zhu, Xiang Gao, Qifa Xu, Fuqiang Chen, Liquan Li, Hong Wu, Fan 

作者机构：Tianmu Lake Institute of Advanced Energy Storage Technologies Jiangsu Liyang213300 China Nano Science and Technology Institute University of Science and Technology of China Suzhou215123 China Yangtze River Delta Physics Research Center Jiangsu Liyang213300 China Beijing Advanced Innovation Center for Materials Genome Engineering Key Laboratory for Renewable Energy Beijing KeyLaboratory for New Energy Materials and Devices Institute of Physics Chinese Academy of Sciences Beijing100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing100049 China CASOL Energy Lt. Co. Jiangsu Liyang213300 China Beijing DP Technology Co.LTD Beijing100080 China Material Digital R&D Center China Iron and steel research Institute Group Beijing100081 China 

出 版 物：《SSRN》 

年 卷 期：2023年

核心收录：

主　　题：Carbon 

摘      要：The rapid growth of lithium dendrites has seriously hindered the development and practical application of high-energy-density all-solid-state lithium metal batteries (ASSLMBs). Herein, a soft carbon (SC)-Li3N mixed ionic and electronic conductive interface layer is designed, for which the in-situ lithiation reaction not only lithiated SC into LiC6 with good electronic/ionic conductivity, but also successfully transformed the mixed-phase Li3N into pure-phase β-Li3N with high ionic conductivity/ion diffusion coefficient and stability to lithium metal. This promotes the rapid migration of Li+ at the interface layer, induces the uniform deposition of lithium metal inside the interface layer, effectively suppresses the growth of lithium dendrites, and significantly improves the electrochemical performance of ASSLMB. LZO@LCO/LPSCl/SC-Li3N/Li ASSLMB achieves high current density (7.5 mA cm-2), ultra-high areal capacity (15 mAh cm-2, corresponding to LZO@LCO mass loadings of 114.14 mg cm-2), and ultra-long cycle life (6000 cycles). Therefore, the introduction of SC-Li3N mixed conducting interface layer can greatly improve the interfacial stability between solid-state electrolyte (SSE)/lithium metal anode and enable dendrite-free ASSLMBs. © 2023, The Authors. All rights reserved.