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reforming on Cu/ZnO/AI203 catalysts are membranes were contaminated with foreign developed which account for all three of the impurity cations, either at the anode or cathode possible overall reactions. The decomposition " side. It was discovered theoretically that both reaction must be included in the kinetic model since the small amount of CO that is produced can drastically reduce the performance of the anode electrocatalyst in low-temperature fuel cells. A kinetic model was developed based on an analysis of the surface mechanism. Rate data were collected for a large range of conditions using a fixed-bed differential reactor. Parameter estimates for the kinetic model were obtained using multi-response least-squares nonlinear regression. The resultant model was able to accurately predict both the rates of production of H 2, CO 2 and of CO for a wide range of i operating conditions including pressures as high as 33 bar.
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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
Power Corporation, USA Here a solid oxide fuel cell electrode is produced by a sintering process. An underlayer is applied to the electrolyte of a solid oxide fuel cell in the form of a slurry, and dried. An overlayer is applied to the underlayer, and dried. The dried under-and overlayers are then s