Effect of the Cell Distance on the Cathode in Single Chamber SOFC Short Stack
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Abstract
Two-cell solid oxide fuel cell (SOFC) stacks with an anode-facing-cathode configuration were operated in single chamber conditions, i.e., oxygen, methane, and nitrogen mixture. The effect of the distance between two cells on the cell performance was investigated. A single cell consisted of a porous NiO/8 mol % -stabilized (YSZ) anode support, a YSZ electrolyte membrane, and a -impregnated cathode. The experimental result demonstrated that the effect of the distance on the cathode was quite distinct when the distance was equal to 2 mm. The distance effect could be negligible when was larger than 4 mm. The effects were also varied with the ratio of methane and oxygen . An acceptable value of the distance was critical for the operation and performance of the stack.
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