Cathode-Supported-Electrolyte Configuration for High-Performance All-Solid-State Lithium–Sulfur Batteries

The sluggish conversion reaction of sulfur and poor interfacial contact restrict electrochemical performance and practical application of all-solid-state Li–S batteries. Herein, we present a rational design of cell structure with a cathode-supported-electrolyte configuration to attain high-performance all-solid-state Li–S batteries. A mechanically robust sulfur cathode was constructed, and a slurry-based polymer electrolyte layer was subsequently cast on the cathode to form an intimate interfacial contact. The resulting battery shows a high specific capacity and good cycle performance. As a proof-of-concept, full cells with variable configurations, excellent flexibility, and safety features are demonstrated.