Gasdiffusionselektroden auf Kohlenfasergewebe für elektrochemische Zellen und Verfahren zu ihrer Herstellung

摘要

This invention pertains to gas diffusion electrodes and diffusers with new improved structures suitable for systems using ion conducting membranes as the electrolyte, and automated methods of manufacture that lend themselves to continuous mass production. Unexpected improvements in gas and vapor transport through the electrode are realized by incorporating a new dispersion process in the construction, reformulating the applied mix with solution additives, and creating a novel coating structure on a conductive web. Furthermore, combining these changes with a judicious choice in coating methodology allows one to produce these materials in a continuous, automated fashion.