BIPOLAR PLATE FOR PEM FUEL CELLS

摘要

The invention relates to a bipolar plate for PEM fuel cells, comprising an internal metal layer and two non-conducting plastic layers, arranged on both sides of and surrounding the metal layer and forming the surfaces of the bipolar plates. The metal layer comprises one or several electrically conducting connections with both surfaces and the plastic layers comprise surface channels for gas transport. The invention further relates to a bipolar plate for PEM fuel cells made from a non-conducting plastic with channels for gas transport on both surfaces and which is metal-coated except in the peripheral regions. The metal coatings on both sides are electrically connected by means of one or several metal contacts extending through the plastic.