Li metal has attracted intense attention due to its high specific capacity, but the dendrite growth during cycling impedes its practical application as a rechargeable anode. To improve the stability of the solid‐electrolyte interphase (SEI) on Li metal is the key to develop Li anode with high safety. In native SEI, inorganics act as fast ion channels and organics play the role of soft base with high flexibility to buffer volume change. However, the SEI with inorganics close to Li surface and organics close to electrolyte always leads to a fragile structure, resulting in repeatedly breaking and growing of the surface layer. Artificial SEI is one of the most effective ways to improve interphase stability and extend the cycle life of Li anode. Inorganics such as Li fluoride, Li nitride, Li phosphate and Li alloys have been widely applied in Li protection. In situ chemical reactions, spin coating and doctor blade coating of organics were also conducted to obtain SEI with high lithiophilic functional groups and high elasticity. To fabricate an ideal artificial SEI, organic and inorganic components should be rearranged as a rational structure to possess synergetic effects with both high flexibility and ionic conductivity. This Minireview summarizes the most recent works on artificial SEI and discusses the electrochemical performance of different components as interphase, aiming to inspire the study on designing and fabricating stable Li anode with robust interphase structure.

中文翻译：

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锂金属电池的人造固体电解质中间相

锂金属由于其高的比容量而引起了广泛的关注，但是在循环过程中枝晶的生长阻碍了其作为可再充电阳极的实际应用。提高锂金属上固体电解质中间相（SEI）的稳定性是开发高安全性锂阳极的关键。在天然SEI中，无机物充当快速离子通道，而有机物则起到软碱的作用，并具有很高的灵活性以缓冲体积变化。然而，无机物接近锂表面并且有机物接近电解质的SEI总是导致易碎的结构，导致表面层的反复破坏和生长。人工SEI是提高相间稳定性和延长锂阳极循环寿命的最有效方法之一。无机物，例如氟化锂，氮化锂，磷酸锂和锂合金已被广泛地应用于锂保护中。在原位化学反应中，还进行了有机物的旋涂和刮涂，以得到具有高亲硫性官能团和高弹性的SEI。为了制造理想的人造SEI，应将有机和无机成分重新排列为合理的结构，以兼具协同作用，高柔韧性和离子电导率。本微型综述总结了有关人造SEI的最新研究成果，并讨论了作为相间成分的不同组分的电化学性能，以期启发研究设计和制造具有稳固相间结构的稳定锂阳极。还进行了有机物的旋涂和刮涂，从而获得了具有高亲硫性官能团和高弹性的SEI。为了制造理想的人造SEI，应将有机和无机成分重新排列为合理的结构，以兼具协同作用，高柔韧性和离子电导率。本微型综述总结了有关人造SEI的最新研究成果，并讨论了作为相间成分的不同组分的电化学性能，以期启发研究设计和制造具有稳固相间结构的稳定锂阳极。还进行了有机物的旋涂和刮涂，从而获得了具有高亲硫性官能团和高弹性的SEI。为了制造理想的人造SEI，应将有机和无机成分重新排列为合理的结构，以兼具协同作用，高柔韧性和离子电导率。本Minireview总结了有关人造SEI的最新研究成果，并讨论了作为相间成分的不同组分的电化学性能，以期启发研究设计和制造具有坚固相间结构的稳定锂阳极。