Sulfide solid electrolytes (e.g., lithium thiophosphates) have the highest room-temperature ionic conductivity (∼10⁻² S cm⁻¹) among solid Li-ion conductors so far, and thus have attracted ever-increasing attention for high energy-density and safety all-solid-state batteries (ASSBs). However, interfacial issues between sulfide electrolytes and electrodes have been the main challenges for their applications in ASSBs. The interfacial instabilities would occur due to side reactions of sulfides with electrodes, poor solid-solid contact, and lithium dendrites during charge/discharge cycling. In this review, we analyze the interfacial issues in ASSBs based on sulfide electrolytes, and in particular, discuss strategies for solving these interfacial issues and stabilize the electrode-electrolyte interfaces. Moreover, a perspective of the interfacial engineering for sulfide-based ASSBs is provided.

硫化物固体电解质（例如硫代磷酸锂）具有最高的室温离子电导率（〜10 ^-2  S cm ^-1）到目前为止，在固态锂离子导体中，因此，对于高能量密度和安全性的全固态电池（ASSB）引起了越来越多的关注。但是，硫化物电解质和电极之间的界面问题一直是它们在ASSB中应用的主要挑战。由于在充电/放电循环期间硫化物与电极的副反应，不良的固-固接触和锂树枝状结晶，将发生界面不稳定性。在这篇综述中，我们分析了基于硫化物电解质的ASSB中的界面问题，特别是讨论了解决这些界面问题和稳定电极-电解质界面的策略。此外，提供了基于硫化物的ASSB界面工程的观点。