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

• Published in: Batteries & supercaps Vol. 3; no. 7; pp. 596 - 603
• Main Authors: Yuan, Hong, Nan, Hao‐Xiong, Zhao, Chen‐Zi, Zhu, Gao‐Long, Lu, Yang, Cheng, Xin‐Bing, Liu, Quan‐Bing, He, Chuan‐Xin, Huang, Jia‐Qi, Zhang, Qiang
• Format: Journal Article
• Language: English
• Published: 01.07.2020
• Subjects: all-solid-state lithium-sulfur batteries; composite electrode; pouch cells; slurry-coating process; sulfide solid electrolyte
• ISSN: 2566-6223; 2566-6223
• DOI: 10.1002/batt.202000051

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. Next‐generation cathodes: The large‐scale fabrication of solid sulfur/sulfide cathode is successfully achieved for all‐solid‐state lithium‐sulfur pouch cells by a facile slurry‐coating process and thus, exhibiting excellent electrochemical performances.