Lithiophilic interface guided transient infiltration of molten lithium for stable 3D composite lithium anodes
作者机构：College of ScienceHuazhong Agricultural UniversityWuhan 430070China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第6期
页 面：8297-8303页
核心收录：
学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：supported by the National Natural Science Foundation of China(Nos.21975091,21805105,and 21773078) the Natural Science Foundation of Hubei Province(No.2019CFA046) the Fundamental Research Funds for the Central Universities of China(No.2662021JC004)
主 题：lithium metal battery composite Li anode interfacial layer thermal infusion long cycling life
摘 要：Fabricating three-dimensional(3D)composite lithium anodes via thermal infusion effectively addresses uncontrollable Li deposition and large volume ***,potential risks due to the long wetting time and high melting point remain a critical yet unconsidered ***,we report a stable 3D composite Li anode by infusing molten Li into a 3D scaffold within 3 s at 220℃.The key-enabling technique is the growth of a lithiophilic Mg-Al double oxide(LDO)nanosheet array layer on the *** in-situ formed lithiophilic alloy,combined with the capillary forces from the nanosheet arrays,enabled the transient infiltration of molten *** addition,the formed high ionic-conductivity Li phase can help construct a robust solid electrolyte interphase(SEI),stabilize the Li anode/electrolyte interface,and guide uniform Li *** 3D composite anode exhibited a long cycling life of 1,000 h under a current density of 1 mA·cm^(−2)and over 1,600 h under a current density of 2 mA·cm^(−2)with a high areal capacity of 4 mAh·cm^(−2)in Li/Li symmetric *** 3D composite anodes paired with high areal capacity LiFePO_(4)(LFP)and S cathodes demonstrate its practical application feasibility.
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