Although we are still at an early stage of commercial production, standardized production steps are emerging. 
In the production of bipolar plates (BPP), vacuum is used in two production steps: Firstly, the bipolar plates are coated, which is usually done by a PVD process, in order to protect the bipolar plates against corrosion in later use. On the other hand, vacuum is used for leak testing of the bipolar plates. The impermeability of fuel cells plays an outstanding role: To meet the quality and safety standards, a leak test is essential. 
Leybold offers the optimal vacuum solution for both the coating processes and the leak testing.