Optimization of operating conditions of a mini fuel cell for the detection of low or high levels of CO in the reformate gas

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Abstract

A prototype of a miniaturized fuel cell has been studied in order to detect carbon monoxide in hydrogen-rich atmosphere for PEM-FC (Protonic Exchange Membrane fuel - cell) applications. It consists in a home-made Membrane -Electrode - Assembly (MEA) developed by the CEA. Experiments have been carried out on a laboratory testing bench with simulated reformed gases. For low CO concentrations (20 ppm), an amperometric mode is suitable but regeneration in air is necessary to obtain a good reversibility of the sensor response. On the contrary, for higher CO concentrations (250 to 4000 ppm), a good reversible response is observed without air regeneration by using a potentiometric or quasi-potentiometric mode. Therefore, this prototype of mini CO sensor seems to be convenient for monitoring reformed gases and ensures the correct operation of a PEM-FC.

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Pijolat, C., Tournier, G., Viricelle, J. P., & Guillet, N. (2010). Optimization of operating conditions of a mini fuel cell for the detection of low or high levels of CO in the reformate gas. In Procedia Engineering (Vol. 5, pp. 135–138). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2010.09.066

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