The Fraunhofer IKTS competences in electrochemistry and mobile electrochemical storage are combined in this department.
Its activities include the development of a wide range of electrochemical methods for the deposition of functional layers, the investigation of corrosion mechanisms or electrochemical machining (ECM). Electrochemical energy storage systems are an example of a major application. However, the fields of application also extend to microelectronics, photovoltaics, etc.
In the field of mobile energy storage, the focus is on conventional lithium-ion batteries. Next-generation batteries are being developed on this basis. This includes, for example, solid-state batteries based on lithium or sodium chemistries, but also multivalent systems and cells with a bipolar structure. The key issues are a deep understanding of the material properties, microstructure, cell structure and electrochemical properties of the battery cells.
For manufacturing processes of such batteries, new processes and an understanding of the value chains are needed. In cooperation with material- and technology-oriented working groups, the entire value chain for energy storage development, manufacturing and production can be presented in the "Battery Technology Application Center". The development of inline testing methods accompanies the process. Emphasis is also placed on characterizing the operating, fault and long-term behavior of batteries.
The efficient use and recycling of battery materials are important components of a future circular economy for such components. For this reason, methods are also being developed for the recycling-friendly design of cells, recycling processes and reuse options. The "Materials Recycling Application Center" is available for this purpose.