MultiEx

Multi-scale simulation for the description of carbon black fragmentation in an extrusion-based dispersion process

Funded by: BMBF

Contact person : Julian Mayer

Summary of the overall project:

MultiEx is a project within the BMBF-funded ProZell competence cluster. The main topic of the investigations is the continuous dispersion process of lithium-ion battery suspensions. Through a coupled CFD-DEM simulation and its experimental validation via suspension and electrode properties, the dispersion process in the extruder is optimized with regard to carbon black structure, throughput and optimal screw configurations. In accordance with the objectives of the overall cluster, the main focus is on the resulting cell quality and performance as well as their costs.
 

Fig.: Schematic representation of the project contents

Objectives and tasks of the Institute for Particle Technology

• Production of suspensions in the extruder incl. in-process analysis
• Improvement and further development of existing analytical methods
• Production of electrodes by means of a continuous coating machine and their macroscopic characterization with regard to the carbon black structure
• Electrochemical investigation of the electrodes by using test cells
• Simulation of extruder twin screw elements on the macro scale as a function of fluid properties and process parameters and derivation of model equations
• Numerically and experimentally supported optimization of the dispersion process in pilot plant scale
• Development of a design tool for optimized screw configuration

 
Project partners

Karlsruher Institut für Technologie (KIT): Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)