Performance of anode-supported solid oxide fuel cell in planar-cell channel-type setup

In a planar-cell channel-type setup, the electrochemical performance of a solid oxide fuel cell strongly depends on the operating conditions. In this study, a large-area (10×10 cm2) anode-supported solid oxide fuel cell was fabricated and tested in a single cell stack. It was found that the gas conversion overpotential can be significant depending on the fuel utilization, and this additional overpotential is not related to the electrodeʹs electrochemical performance. Thus, the gas conversion overpotential must be taken into account for accurate analysis of the electrochemical performance of an SOFC stack, particularly under high fuel utilization conditions.