Stefan Polster
Group Leader in the Department of Sheet Metal Forming
Fraunhofer IWU
Stefan Polster studied at the Saxon University of Cooperative Education in Glauchau. After gaining eight years of industry experience, he joined Fraunhofer IWU in 2009. As part of the Department of Sheet Metal Forming, his research focuses on tool concepts, die design, and the simulation of forming processes, with a particular emphasis on heat-supported forming processes and forming technologies for Bipolar Plates.
Current trends in the production and coating of bipolar plates for electrolysis and fuel cell applications
Presentation Abstract: The production and coating of bipolar plates for electrolysis and fuel cell applications are undergoing significant advancements to improve efficiency, durability, and cost-effectiveness. One key trend is the use of hollow embossing rolls, which enable high-precision forming of microstructures while reducing material stress and deformation. This technology enhances the mechanical stability and conductivity of bipolar plates, essential for long-term performance. Additionally, Fineforming, an advanced precision forming process, allows for the manufacturing of ultra-thin metallic plates with complex flow field designs, ensuring optimal gas and liquid distribution. To further enhance performance, coating technologies such as corrosion-resistant and electrically conductive coatings are increasingly applied. These coatings, often based on carbon, precious metals, or ceramics, improve the longevity and efficiency of bipolar plates by reducing contact resistance and preventing material degradation. The integration of these innovative manufacturing and coating processes is driving the next generation of electrolysis and fuel cell technologies, paving the way for more efficient and sustainable energy conversion systems.