Construction of Moisture-Stable Lithium Diffusion-Controlling Layer toward High Performance Dendrite-Free Lithium Anode
文献类型： 外文期刊
作者： Wang, Jian 1 ; Hu, Huimin 1 ; Duan, Shaorong 3 ; Xiao, Qingbo 4 ; Zhang, Jing 5 ; Liu, Haitao 6 ; Kang, Qi 7 ; Jia, Lujie 3 ;
作者机构： 1.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Key Lab Multifunct Nanomat & Smart Syst, I Lab, Suzhou 215123, Peoples R China
2.Helmholtz Inst Ulm HIU, D-89081 Ulm, Germany
3.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
4.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China
5.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
6.Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing 100088, Peoples R China
7.Shanghai Jiao Tong Univ, Dept Polymer Sci & Engn, Shanghai 200240, Peoples R China
8.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Div Nanomat, Nanchang 330200, Jiangxi, Peoples R China
9.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Jiangxi Key Lab Carbonene Mat, Nanchang 330200, Jiangxi, Peoples R China
关键词： dendrite-free lithium anodes; lithium alloy layers; lithium metal batteries; moisture stability; rapid ion diffusion
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：
页码：
收录情况： SCI
摘要： Spatially random lithium nucleation and sluggish lithium diffusion across the electrode/electrolyte interface lead to uncontrollable lithium deposition and the growth of lithium dendrite on metallic lithium surface, causing severe safety problems. Herein, a functional rapid-ion-diffusion alloy layer on the metallic lithium surface (RIDAL-Li) is designed through a simple chemical reduction reaction. Such a layer efficiently reduces energy barriers for lithium transport and thus significantly homogenizes the lithium atom flux for lateral deposition, which are confirmed by electrochemical tests, theoretical simulations, and spectroscopic analysis. Furthermore, the as-prepared RIDAL layer also displays a much higher corrosion resistance to moisture and oxygen. As a result, in ether-based and carbonate-based electrolytes, the pretreated RIDAL-Li anode can achieve a long stripping/plating lifespan of 900 h and a high Coulombic efficiency of 99% without dendrite growth. Even after being exposed to the ambient environment with relative humidity of 51% for 60 min, the RIDAL-Li can survive for stripping/plating 400 h and exhibit a low overpotential of 18 mV, displaying the superiority for ambient atmosphere battery assembly. Matched with LiFePO4 or sulfur cathode, the full cells exhibit remarkably improved stability and capacity retention, showing its suitability for applications in lithium metal batteries.
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