The development and application of electrochemical energy storage has become increasingly important in the face of the world's excess carbon emissions today. Lithium-ion batteries (LIBs), which have been fully commercialized, are facing the dilemma of insufficient lithium resources, while sodium-ion batteries (SIBs), which are chemically similar, more abundant, and less costly, have become an important alternative to LIBs. Specifically, solid-state sodium-ion batteries (SSSIBs) with high safety are more suitable for large-scale energy storage systems. However, the further application of solid electrolytes is hindered by their poor mechanical properties, high interface resistances and sodium dendrites. To solve these problems, multilayer electrolyte structures have been utilized to improve the interfacial issues. This paper reviews the growth mechanism of sodium dendrites, as well as the current research progress and contents of multilayer electrolytes in SIBs. Finally we look forward to the application prospects and urgent challenges of multilayer structured electrolytes. It is expected that this review will guide the development of multilayer electrolytes for high-performance solid-state batteries.

中文翻译：

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钠离子电池用多层固体电解质的研究进展


面对当今世界超额碳排放的现状，电化学储能的开发和应用变得越来越重要。已全面商业化的锂离子电池 （LIB） 面临锂资源不足的困境，而化学性质相似、储量更丰富、成本更低的钠离子电池 （SIBs） 已成为 LIB 的重要替代品。具体来说，具有高安全性的固态钠离子电池 （SSSIB） 更适合于大型储能系统。然而，固体电解质的进一步应用受到其较差的机械性能、高界面电阻和钠枝晶的阻碍。为了解决这些问题，人们利用多层电解质结构来改善界面问题。本文综述了钠枝晶的生长机理，以及目前 SIBs 中多层电解质的研究进展和含量。最后，我们期待多层结构电解质的应用前景和紧迫的挑战。预计本综述将指导用于高性能固态电池的多层电解质的开发。