The frequency of pulsed DC sputtering power introducing the graphitization and the durability improvement of amorphous carbon films for metallic bipolar plates in proton exchange membrane fuel cells

Amorphous carbon (a-C) films have been coated on the metallic bipolar plates (BPPs) in Proton Exchange Membrane Fuel Cells (PEMFCs) to improve the corrosion resistance and the interfacial electrical conductivity of metallic BPPs. However, the durability of a-C in the harsh environments of PEMFCs is still confronted with enormous challenges. In this paper, a-C films are prepared on SS316L BPPs via pulsed DC sputtering power with different...