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The BATT4EU Partnership's SRIA emphasizes the urgent need for investment in long-term research on Generation 5 (Gen5) battery solutions to overcome the limitations of Li-ion technology and strengthen the EU's industrial autonomy. TALISSMAN’s primary objective is to lead the development of safe, sustainable, high-performance, and cost-effective Gen5 lithium-sulfur batteries (LSBs) for aerospace and other electromobility applications. By bringing together a multidisciplinary consortium of research institutions and top-tier industry leaders, TALISSMAN will develop and demonstrate two advanced battery pathways in small-scale, multi-layer pouch cell format (TRL4): (i) a hybrid quasi-solid gelled concept (Gen2027) and (ii) an all-solid-state sulfide approach (Gen2030). TALISSMAN will tackle critical challenges hindering LSB industrialization, such as polysulfide shuttling and stabilizing the lithium metal anode/ electrolyte interface. These efforts will involve developing optimized materials and components, improving cell design and assembly, and refining manufacturing techniques to ensure compatibility and easy integration with existing Gen3 LIB production lines. Iterative feedback loops will optimize the technology’s techno-economic performance, while advanced characterization techniques and novel modelling approaches will enhance the understanding of reaction mechanisms, performance limitations, and degradation processes. The project will incorporate a Safe and Sustainable-by-Design framework, including essential safety and environmental criteria, and promote efficient resource use through life-cycle assessments, eco-design principles, and innovative recycling processes. Lastly, dissemination, exploitation, and communication activities, rooted in an Open Science approach, will support the project, facilitating the future industrial deployment of TALISSMAN's solutions, and contributing to the establishment of a competitive and sustainable battery industry in Europe.