Abstract
A micromodule, the size of was fabricated using three micro-solid oxide fuel cell (SOFC) bundles which consist of anode-supported microtubular SOFCs of diameter and porous cathode matrices. The module was designed to apply to small-sized power sources at a low operating temperature under . The open-circuit voltage of the module depended upon the operating temperatures, the lower for higher temperature due to the use of a ceria-based electrolyte. Maximum power outputs of the module were 0.5, 0.9, and at 450, 500, and operating temperatures, respectively, where the air was applied only by natural convection. As a result, the performance of the module turned out to be over at operating temperature. The results also showed a strong influence of the fuel flow rate; the higher rate led to an increased performance due to improved gas transport.
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