Bipolar Graphite Plate, graphite bipolar plate for hydrogen fuel cell

Bipolar plates are core components of PEM fuel cells. They control not only hydrogen and air supply but also the release of water vapor, along with heat and electrical energy. Their flow field design has a major impact on the efficiency of the entire unit. Each cell is sandwiched between two bipolar plates – one letting in hydrogen on the anode and another air on the cathode side – and produces about 1 volt under typical operating conditions. Raising the number of cells, like doubling the number of plates, will increase the voltage.Most PEMFC and DMFC bipolar plates are made of graphite or resin-impregnated graphite.