At the (external: https://www.aachener-kolloquium.de/en/ text: 31st Aachen Colloquium for Sustainable Mobility), which was held from 10-12 October 2022, Datwyler, FEV Europe GmbH and the Fraunhofer UMSICHT presented a detailed paper on the development of the BiFoilStack – a Novel cell and stack design with compound-foil-based bipolar plates for heavy-duty fuel cell systems. Heavy-duty commercial vehicles require fuel cells with a service life in excess of 30,000 hours, which historically has been challenging for many components – particularly metallic bipolar plates, which can corrode in the humid and acidic environment of the cell.