All-solid-state lithium-sulfur batteries (ASSLSBs) using inorganic solid-state electrolytes can effectively alleviate the polysulfide shuttle effect in liquid electrolytes and improve the energy density. However, the electrochemical window of sulfide-based catholytes in composite cathodes is relatively narrow, which makes the evaluation of electrochemical performance of sulfur cathodes in ASSLSBs complicated. The decomposition of the sulfide catholytes increases the interfacial resistance, thus reducing the battery cycle life. To overcome these challenges, Li