Slurry-Coated Sulfur/Sulfide Cathode with Li Metal Anode for All-Solid-State Lithium-Sulfur Pouch Cells

All-solid-state lithium-sulfur batteries are strongly considered as the most promising next-generation electrochemical energy storage systems due to their high safety and energy density. However, in view of practical application, it is difficult to obtain large-scale solid-state sulfur cathode continuously. Herein we achieve the large-scale fabrication of solid sulfur cathode by a facile slurry-coating process through the screening of various solvents and binder contents. The composite cathodes in all-solid-state lithium-sulfur pouch cells exhibit a high specific capacity of 1169 mAh g⁻¹ and excellent cycling stability. Furthermore, a practical lithium-sulfur pouch cell with an areal discharge capacity of up to 2.3 mAh cm⁻² is also demonstrated. This work makes a leap towards the practical application of all-solid-state lithium-sulfur batteries.