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Battery cells are sealed inside a strong, flexible pouch which is placed inside a lightweight pressure vessel filled with inert working fluid (e.g., argon gas, silicone oil) that applies a low pressure evenly around the pouch, ensuring uniform compression and eliminating directional stress on the cell. This case maintains constant pressure throughout the battery’s life cycle to ensure consistent contact between solid components, which optimizes performance and minimizes damage. The pressure necessary in this design is much lower than that in uniaxial systems, which allows for a less heavy packaging system. This lightweight design and improved technique may show particular relevance on large scales (e.g., aerospace, automotive), where onboard load weight and longevity are priorities. This isostatic battery case contributes to the SABERS 2.0 portfolio (LEW-TOPS-188), improving the state of the art for solid-state batteries. Currently at a TRL 4, the case is available to license independently or as part of the larger SABERS solid-state battery suite.

The original SABERS portfolio established foundational materials and architecture for solid-state lithium-sulfur batteries through innovations in graphene-based cathodes, solid electrolytes, and bipolar plate designs. Building on this foundation, SABERS 2.0 addresses critical challenges that have limited the practical implementation and scalability of solid-state batteries: cathode efficiency and electrolyte performance, anode interface stability, and cell-level packaging optimization. The SABERS 2.0 portfolio comprises four complementary innovations that work together to improve solid-state battery performance and manufacturing viability. Major licensable technologies in the SABERS 2.0 portfolio include: • Mixed Conducting Cathodes and Dense Electrolytes (LEW-TOPS-186): Two complementary innovations in electrolyte densification and catholyte formulation that simplify manufacturing and improve energy capacity, ion conductivity, and battery reliability. • Solvent-Free Anode Interlayer (LAR-TOPS-405): A dry-processed interlayer that prevents dendrite formation, maintains stable interfaces, and enables cost-effective, environmentally friendly manufacturing. • Isostatically Pressurized Cell Case (LEW-TOPS-187): A lightweight pressure vessel system that provides uniform compression to solid-state cells, eliminating the need for heavy machinery while enhancing performance and longevity. These technologies may be licensed independently, as part of the SABERS 2.0 suite, or in custom combination with the technologies in the original SABERS suite (LEW-TOPS-167).