An important goal of calendering is the optimization of the pore structure. Consequently, the understanding of the process is decisive in order to be able to adjust the optimal pore and particle structure and favourable mechanical properties in a targeted manner. This is where the ProKal project comes in. Within the scope of the project, the understanding of the process-structure-property relationship of calendering of high-energy, continuously and in particular also batch-coated cathodes and anodes with high basis weights and high-capacitive active materials is to be further developed on the basis of iPAT’s knowledge. Anodes and cathodes with the most promising structure will be integrated into battery cells and electrochemically investigated, especially at the MEET impedance spectroscopy, in order to evaluate the electrodes and the battery cell with regard to the achieved energy density and the electrochemical performance.