Plasma-modified Bipolar Plates for Fuel Cells
Fuel cell stacks with bipolar plates consisting of surface-modified stainless steel stand out for their space- and weight-saving design. This means that, in theory, an electric zero emission drive with ranges of more than 500 km is possible. This preliminary study shows development approaches for bipolar stainless steel plates which reveal high corrosion resistance and electrical conductivity thanks to plasma modification. They are approximately 60 % cheaper than gold-coated stainless steel bipolar plates. In comparison with bipolar plates consisting of graphite composite, the bipolar stainless steel plates are around 5 % lighter and roughly 25 % smaller.