材料科学
相间
阳极
准固态
锂(药物)
电解质
电流密度
枝晶(数学)
化学工程
电化学
阴极
法拉第效率
纳米技术
电极
色素敏化染料
化学
医学
遗传学
物理
几何学
数学
工程类
物理化学
量子力学
生物
内分泌学
作者
Jun-Chen Guo,Shuang‐Jie Tan,Chaohui Zhang,Wenpeng Wang,Yao Zhao,Fuyi Wang,Xu‐Sheng Zhang,Rui Wen,Ying Zhang,Min Fan,Sen Xin,Juan Zhang,Yu‐Guo Guo
标识
DOI:10.1002/adma.202300350
摘要
Abstract The uncontrollable dendrite growth and unstable solid electrolyte interphase have long plagued the practical application of Li metal batteries. Herein, a dual‐layered artificial interphase LiF/LiBO–Ag is demonstrated that is simultaneously reconfigured via an electrochemical process to stabilize the lithium anode. This dual‐layered interphase consists of a heterogeneous LiF/LiBO glassy top layer with ultrafast Li‐ion conductivity and lithiophilic Li–Ag alloy bottom layer, which synergistically regulates the dendrite‐free Li deposition, even at high current densities. As a result, Li||Li symmetric cells with LiF/LiBO–Ag interphase achieve an ultralong lifespan (4500 h) at an ultrahigh current density and area capacity (20 mA cm −2 , 20 mAh cm −2 ). LiF/LiBO–Ag@Li anodes are successfully applied in quasi‐solid‐state batteries, showing excellent cycling performances in symmetric cells (8 mA cm −2 , 8 mAh cm −2 , 5000 h) and full cells. Furthermore, a practical quasi‐solid‐state pouch cell coupling with a high‐nickel cathode exhibits stable cycling with a capacity retention of over 91% after 60 cycles at 0.5 C, which is comparable or even better than that in liquid‐state pouch cells. Additionally, a high‐energy‐density quasi‐solid‐state pouch cell (10.75 Ah, 448.7 Wh kg −1 ) is successfully accomplished. This well‐orchestrated interphase design provides new guidance in engineering highly stable interphase toward practical high‐energy‐density lithium metal batteries.
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