Solid-state batteries (SSBs) are expected to provide higher energy densities, faster charging performance and greater safety than lithium-ion batteries (LIBs). Introducing a solid electrolyte (SE) results in changes in materials, manufacturing processes and cell characteristics. Compared to LIBs, however, there is a limited understanding of the recyclability of SSBs. Here we review the present strategies for indirect recycling of various SSBs, such as resynthesis, and direct recycling, such as reconditioning, focusing on promising SEs including oxides, sulfides/thiophosphates/halides and polymers. We consider the recycling routes adapted to different SEs, consisting of pretreatment as well as mechanical and metallurgical processes. Future recycling solutions will need to meet the demands for robust, energy-efficient methods with minimal environmental impact, while delivering high recycling rates and good secondary material quality.

固态电池（SSB）预计将比锂离子电池（LIB）提供更高的能量密度、更快的充电性能和更高的安全性。固体电解质（SE）的引入会导致材料、制造工艺和电池特性发生变化。然而，与锂离子电池相比，人们对固态电池的可回收性了解有限。在这里，我们回顾了各种SSB的间接回收（例如再合成）和直接回收（例如修复）的现有策略，重点关注有前景的SE，包括氧化物、硫化物/硫代磷酸盐/卤化物和聚合物。我们考虑适合不同SE的回收路线，包括预处理以及机械和冶金工艺。未来的回收解决方案将需要满足对稳健、节能方法的需求，同时对环境影响最小，同时提供高回收率和良好的二次材料质量。