Sgl Carbon Ag

Sgl Carbon Se

Victor Trapp

Tetsu Yamamoto

Peter Wilde

Heiko Leinfelder

Ruediger Hengl

Markus Leib

This invention relates to bipolar plates for electrochemical cells, particularly low-temperature fuel cells, with surface modification to enhance through-plate conductivity, processes for improving the surface properties of those bipolar plates, and fuel cell assemblies made with such plates. Graphite-polymer composite bipolar plates with high bulk conductivity are subjected to an abrasive surface treatment to improve the surface contact as well as the reactant transfer to the adjacent gas diffusion electrodes.

Bipolar plates for fuel cell stacks

This invention relates to electrode substrates for electrochemical cells, particularly low-temperature fuel cells, and processes for their production. Graphitized fiber web structures are used that have a preferred non-planar fiber alignment resulting in high through-plane conductivity. These structures are further impregnated and processed to adjust the final product properties.

Electrode substrate for electrochemical cells based on low-cost manufacturing processes

Growing community of inventors

Augsburg, Germany

Victor Trapp