Abstract
Porous La 0.81Sr 0.09MnO 3 and LSM-YSZ composite electrodes of the solid oxide fuel cell (SOFC) were made, and the relationship between the overpotential and the three phase boundary (TPB) length was investigated by constructing a model. Three-dimensional distribution of TPB for the composite cathode was suggested. The effective thickness of it was observed to be less than 20 μm.
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