In this GeoDict tutorial series, we aim to simplify the process of creating a battery from bimodal electrodes and performing a degradation simulation.

In this video, our application engineer Janine Hilden guides you through the process of creating a digital bimodal cathode using the GeoApp Bimodal Cathode introduced in GeoDict 2023.

Janine emphasizes the user-friendly design of the GeoApp, which allows you to enter parameters directly from the battery production.

The tutorial specifically addresses the importance of selecting the correct domain settings for future degradation simulations in BatteryDict. Using the GeoApp for bimodal cathodes, we input two different active materials, NMC333, to create two separate particle size distributions and give a clear explanation of the D-values in this process.

The video goes into the specifics of defining the ratio of particle types, understanding density values, and selecting materials for the electrolyte and carbon binder area. The tutorial demonstrates the flexibility and accuracy of GeoDict by setting "Criteria to Match" based on porosity and loading values within a specified tolerance range, and also provides insight into the use of random seeds and the application of termination criteria.

Once cathode generation is complete, Janine guides you through the results viewer, which displays the exact stress and porosity. You will also get a 3D view of the finished bimodal cathode structure, where the NMC particles and carbon binder will be visible.