Sulfur Transfer Melt Infiltration for High?Power Carbon Nanotube Sheets in Lithium?Sulfur Pouch Cells

Among next-generation battery systems, the lithium-sulfur (Li?S) technology is attracting increasing attention driven by low active material costs, high theoretical specific energy, and promising progress made in terms of its readiness level (TRL) recent years. However, power density, especially prototype cells, an often neglected parameter being crucial for future application sectors. In this work, cathode redesigned introducing a scalable, non-toxic, homogeneous sulfur impregnation process free-standing carbon scaffolds tailorable areal loading. This novel transfer melt infiltration exemplarily applied to nanotube (CNT)-based Li?S structures, but as generic scalable methodology highly versatile. We demonstrate development CNT Buckypaper (BP) powder-based dry electrodes (DryFilm) host structures with polysulfide (PS) solvating electrolyte system DME/DOL. order evaluate practicability application, BP varying contents employed multi-layered pouch cell format 4 ?L mgS?1 reduced conditions. Additionally, first cells circular perforated aluminum current collector enable 80 % weight savings passive without compromising performance thin-film cathodes. study important step towards lightweight applications, such drones or altitude satellites.