Various processes and scaling options are available at Fraunhofer ISE for the development and production of electrodes.
For the development and optimization of electrodes using a solvent-based process, we can use a laboratory-scale doctor blade process. After successful validation on a small scale, it is possible to examine the formulations on our roll-to-roll coater (available Q1/2025). Here we have the option of testing smaller quantities by doctor blade in a continuous process or evaluating substances for a further scaling step by slot die coating.
For dry or semi-dry electrode production, we have various options for pre-powder processing (e.g. ball mills and granulation). A discontinuous electrode production can be carried out both on a coin cell scale or in an application-oriented format (20 x 20 cm). In addition, we have the option of using a calender to process and evaluate a continuous dry coating.
In the area of solvent-based electrode production, we are researching, among other things, PFAS-free binder systems and the use of non-toxic solvents such as water. In the area of dry coating, we are investigating various process methods for powder pretreatment and are working with different binder systems.