Electrode structure designs for next-generation high-energy and high-performance batteries (Next-Gen-3DBat)
The NextGen-3DBat project focuses on 3D laser cell component structuring to develop high-energy and high-performance battery systems. The implementation of microstructures significantly improves the liquid electrolyte wetting of the cell stack (consisting of electrodes and separators) and thus the cell performance. In addition, targeted 3D structuring offers the possibility of using thicker electrodes since internal areas can also contribute to the battery capacity. In addition to increasing the energy density, cost savings are also achieved with respect to the number of stacking processes. The 3D battery concept developed on a laboratory scale will subsequently be transferred to large format cells. The approach requires the implementation of laser processes to industrial production level. This calls for the advanced development of ultra-short pulsed laser beam sources with high power and specialized beam guidance. The aim is to produce demonstrator cells with a capacity of 20 Ah in a high-speed process using the so-called roll-to-roll process. For the first time parameters are to be determined for the new high-energy and high-performance battery types as well as for the process data concerning their economic production.