Solid-state battery has been widely accepted as the next-generation energy-storage technology because of its better safety and potentially higher energy density. Solid electrolyte plays the most critical role in its performance, among which sulfides show the highest lithium-ion conductivities. To realize the mass production and practical application of sulfide-based electrolytes and all-solid-state batteries, one of the most promising methods is by in-situ solidification of sulfide–electrolyte solution/slurries with liquid-involved processing that can be performed in controlled atmosphere with low temperature. This enables wet coating process for electrolyte/electrode layer formation and thus opens up the possibility of mass production of sulfide solid-state batteries. In this review, liquid-involved process is carefully classified into liquid-phase synthesis, solution, and slurry process with clear definition to avoid any confusion among these different processes. The liquid-involved processes of sulfide solid electrolytes themselves on material level, sulfide-based composite electrolytes/electrodes on component level, and sulfide-based all-solid-state batteries on device level are summarized and discussed in details. Strategies to design and prepare solid sulfide-based electrolytes/electrode layers and batteries with liquid-involved process are also suggested.

固态电池因其更好的安全性和潜在的更高的能量密度而被广泛接受为下一代储能技术。固体电解质在其性能中起着至关重要的作用，其中硫化物显示出最高的锂离子电导率。为了实现硫化物基电解质和全固态电池的批量生产和实际应用，最有前途的方法之一是通过硫化过程原位固化硫化物-电解质溶液/浆液，该过程可以在液体中进行。可控的低温环境。这使得能够进行用于电解质/电极层形成的湿式涂覆工艺，并因此提供了批量生产硫化物固态电池的可能性。在这篇评论中 涉及液体的过程被仔细地分为液相合成，溶液和淤浆过程，并且定义清晰，以避免这些不同过程之间的混淆。总结并详细讨论了在材料层面上硫化物固体电解质本身的液体参与过程，在组件层面上涉及硫化物基复合电解质/电极以及在装置层面上涉及硫化物的全固态电池的过程。还提出了通过液体工艺设计和制备基于固体硫化物的电解质/电极层和电池的策略。对组件级别的硫化物基复合电解质/电极以及设备级别的硫化物基全固态电池进行了总结和详细讨论。还提出了通过液体工艺设计和制备基于固体硫化物的电解质/电极层和电池的策略。对组件级别的硫化物基复合电解质/电极以及设备级别的硫化物基全固态电池进行了总结和详细讨论。还提出了通过液体工艺设计和制备基于固体硫化物的电解质/电极层和电池的策略。