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Following the introduction of Industry 4.0 and the development of information technologies, manufacturing companies have been undergoing a profound transformation. This transformation envisions the realization of the smart factory as a fully connected, flexible production system regulated by data. Digitalization and collection of the critical parameters are the vital prerequisites for this vision. Electrode manufacturing is regarded as the core phase in the battery cell production, having most of the properties determining the electrochemical performance of the battery cell established in this phase. There are a high number of parameters involved in electrode manufacturing. The digitalization of these parameters is associated with a considerable amount of effort and costs. Introducing a tailored digitalization concept provides the first step toward smart battery cell production. The tailored digitalization concept is based on the importance of the parameters from the quality management perspective and their complexity with regard to digitalization. The prioritization of parameters enables a successive quality‐oriented digitalization strategy. The concept is built on a two‐step literature‐based and expert‐based approach. The results include a comprehensive list of parameters and their prioritization for digitalization and integration in a tracking and tracing concept.

Researchers have been working for many years to find new material and cell systems that can be used as potential post-lithium-ion batteries. Among these, the all-solid-state battery is considered a promising candidate, with sulfide-based materials having essential advantages over other solid electrolyte materials, particularly in terms of their high ionic conductivity. A great challenge, however, is their high reactivity in contact with water, where harmful hydrogen sulfide (H 2 S) is formed. Since H 2 S formation has implications for both worker safety and material quality, it is important to quantify its impact. For this reason, this paper examines the relationship between the product properties and the H 2 S formation as well as influences resulting from the production environment. Exemplary material states along the process chain of a wet coating process route are analyzed for the steps of storage, mixing, coating, drying, and densifying with Li 6 PS 5 Cl (LPSCl) as a solid electrolyte material. By determining the H 2 S formation rate for sulfide-based separator sheets, it is shown that the water content in the surrounding atmosphere has the highest impact, while other investigated parameters are negligibly small in comparison. Among the product properties, the geometric surface and pore surface have a great influence. These results demonstrate the need for a controlled atmosphere in the production facilities at dew points of −40 to −50 °C. At those moisture levels, occupational safety and product quality are ensured for the investigated solid electrolyte sheets of LPSCl. This study is the first to provide quantitative data from the point of view of the production environment on the formation of H 2 S gas when using solid sulfide electrolytes and can therefore serve as a guideline for equipment, material, and cell manufacturers.

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