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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
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
oxygen partial pressures 1.5, 10.2, 49.2, 100 and 286 Pa within the temperature range of 20-1050ยฐC were studied. Nickelate oxygen desorptionlsorption spectra when heating/cooling at constant rate demonstrated strong dependence of cation composition of the samples. Unlike La,,&, ,NiO, compounds, thos