In Situ Self-Assembly of Ordered Organic/Inorganic Dual-Layered Interphase for Achieving Long-Life Dendrite-Free Li Metal Anodes in LiFSI-Based Electrolyte
文献类型： 外文期刊
作者： Wang, Jian 1 ; Yang, Jin 1 ; Xiao, Qingbo 1 ; Zhang, Jing 4 ; Li, Tie 1 ; Jia, Lujie 5 ; Wang, Zile 5 ; Cheng, Shuang 1 ; Li 1 ;
作者机构： 1.Chinese Acad Sci, i Lab, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China
2.Univ Sci & Technol China, Sch Nanotech & Nanobion, Hefei 230026, Anhui, Peoples R China
3.Jiangsu Acad Agr Sci, Recycling Agr Res Ctr, Nanjing 210014, Peoples R China
4.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
5.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
6.Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing 100088, Peoples R China
关键词： artificial solid electrolyte interphase; corrosion mechanism; in situ self-assembly; lithium dendrite; organic/inorganic dual-layered structure
期刊名称：ADVANCED FUNCTIONAL MATERIALS （ 影响因子：18.808； 五年影响因子：18.125 ）
ISSN： 1616-301X
年卷期： 2021 年 31 卷 7 期
页码：
收录情况： SCI
摘要： Metallic lithium electrode with high capacity of 3860 mA h g(-1) is the most promising candidate for rechargeable batteries. However, some inherent problems such as dendrite growth, uneven solid electrolyte interphase (SEI), and high manufacturing risk restraint its practical application. Herein, distinct from the conventional mosaic structure, a facile fabrication of in situ self-assembled organic/inorganic hybrid SEI with ordered dual-layer structure on the lithium surface to suppress dendrite formation is proposed. With the aid of moderate active fluoric-containing ionic liquid, the as-formed lithium fluoride and robust ordered organic moieties are in situ self-assembled on the metallic lithium surface. The evolution process of the dual-layered structure is revealed by X-ray spectroscopy, in situ sum frequency generation spectroscopy, and atomic force microscopy. The formed "double protection" ordered hybrid interphase layer also exhibits the surprising ability against the corrosion of carbonate electrolyte or dry air. As a consequence, the pretreated metallic lithium electrode represents excellent stripping/plating reversibility of approximate to 99% and a long lifespan up to 1200 h without formation of dendrite, and remains high performance at a current density of 10 mA cm(-2), which is much higher than most reports, showing the facilitating promising to the future utilization.
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