The demand for safe, power- and energy-dense, low-cost batteries is constantly increasing due to the global shift towards renewable energy sources and the associated need for battery electric vehicles and grid-level energy storage. However, current-generation lithium-ion batteries are struggling to meet the requirements and are reaching their physicochemical limits regarding energy density. Solid-state battery technology promises to improve the current state of the art of electrochemical energy storage and has proven itself in research, although not yet in commercial applications. One of the main challenges in bringing the technology to the market is the limited knowledge and research on the production of solid-state batteries with commercially viable technologies. This work presents a study on the application of laser cutting technology to components of sulfide-based solid-state batteries. Challenges such as the production atmosphere, handling of the components, and differences compared to conventional battery components are discussed. Process studies are utilized to identify appropriate parameters for cutting sulfide-based components based on both qualitative and quantitative assessments. The improvement of the resulting edge quality compared to mechanical punching is highlighted. The process requirements, the analysis of the behavior of sulfide-based components, and the proposed process parameters presented in this work pose a significant step toward the successful commercialization of sulfide-based solid-state batteries.
Keywords
- Laser Cutting
- Solid-State Batteries
- Sulfide Electrolyte