Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Technische Universitát Dresden

Giorgio Maurizio

Teja Roch

Slavcho Topalski

Thomas Stucky

Axel Zwick

The bipolar plate of the invention for electrochemical cells, especially for proton-exchange membrane (PEM) fuel cells, is made with a metallic substrate and on the surface is made with an electrical contact resistance-reducing, carbon-based layer, a layer system or a boundary layer which is made of a near-surface, primarily sp2-bonded, carbon-based layer having a carbon fraction ranging from 50% to 100%, this layer being applied on a metallic substrate surface that is modified relative to the starting material. There may also be a surface region of the substrate in the form of an edge layer made with nitride and/or carbon by nitriding and/or carburizing. On the surface which is in touching contact with a gas-permeable element within the electrochemical cell, the metallic substrate may have a structuring made with elevations and/or depressions in the respective surface.

Growing community of inventors

Witten, Germany

Giorgio Maurizio