The publication of DIN 4880 in May 2026 resulted in the establishment of a uniform standard for the quality control of bipolar plates in fuel cells and electrolysers. The fundamental measurement specifications are largely based on the BePPeLresearch project, which was coordinated by the DLR Institute of Engineering Thermodynamics.
Uniform measurement procedure for different material classes
Electrical through-plane resistance is a crucial parameter for the efficiency and service life of electrochemical cells. Until now, there has been no comparable standard for determining this value in a non-destructive and manufacturer-independent manner. DIN 4880 addresses this by establishing a standardised four-wire measurement method. This ensures reliable testing of both composite materials and coated metal plates. For manufacturers, the standardisation opens up the possibility of integrating quality controls directly into industrial series production processes, which accelerates the further market introduction of hydrogen technology components.
From research project to official DIN standard
The technical foundations for the new industrial standard were developed as part of the BePPeL (Bipolar Plates for Fuel Cells and Electrolysers) research project. As project coordinator, the Institute was responsible for the work package entitled 'Draft measurement specification'. Following close consultation with the Centre for Fuel Cell Technology (ZBT), the technical specifications of all consortium partners were consolidated into a practice-oriented and scientifically sound procedure. The final technical elaboration and the formal transition process into the official DIN standard were carried out under the joint responsibility of DLR and ZBT.
Transitioning Effectively from Science to Practice
The Institute's strategic role in translating research outcomes into industry-specific standards is highlighted by the success of the standardisation process. The completion of DIN 4880 is the result of close technical collaboration within the BePPeL consortium and the technical support provided by ZBT staff.
