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can be tailored to match gas flow patterns and gradients. Further refinements can be achieved by varying the print pattern across the cell, and by using multiple layers to control both the depth and structure of the layers within the pattern. The advantages of this gas diffusion electrode are higher performance and lower cost.
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This invention ensures sufficient gas diffusion and ion-conduction in a fuel cell catalyst electrode. This arrangement does not tequire a thick electrolyte layer to ensure sufficient transmission of ions, but enables sufficient oxygen to be fed to the catalyst. Patent number: US 6015635 ## Flexible
A significant improvement in hydrogen-air proton-exchange membrane (PEM) fuel cell performance has been achieved by the use of a pore-forming additive in the air electrode's active layer. The fuel cell was operated without significant loss of performance at atmospheric pressure and without humidific