Fraunhofer ISE Develops New Battery Cell Architecture Increasing Energy Density by 10-15%
The Fraunhofer Institute for Solar Energy Systems (ISE) has developed a new battery cell architecture that increases energy density by 10 to 15 percent while maintaining the same weight. This innovation was achieved by significantly thickening the electrode coatings from the standard 100-200 micrometers to up to 800 micrometers. According to Dr. Oliver Fitz, Group Leader for Battery Cell Technology at Fraunhofer ISE, this reduction in the number of current collectors allows for more active material within the same cell weight. The research was conducted as part of projects funded by the German Federal Government, including 'VORAN – Innovative Sodium-Ion Battery Storage for Stationary and Mobile Applications' and 'INFAB – Zinc-Ion Batteries for Stationary Energy Storage – Manufacturing and Assembly'. While the primary focus was on stationary battery storage systems, the physical insights gained are also applicable to traction batteries for electric vehicles.