B121 PEFC劣化機構解明のための排ガス中微量成分in-line計測(分散エネルギーシステムにおける要素技術とその集積化2)

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  • B121 Inline mass spectroscopic analysis in exhaust gas for investigation of PEFC degradation

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In-line direct gas mass spectroscopy (DGMS) was applied for real-time monitoring of exhausted gas of a polymer electrolyte fuel cell (PEFC) in order to investigate degradation behaviors of the fuel cell. It was shown that hydrogen emission in cathode exhausted gas was larger under OCV operation than load operation, and that intermittent peaks of carbon dioxide emission in cathode exhausted gas were detected with positive sweep of cell potential, suggesting that carbon corrosion of the cathode catalyst proceed under load cycle operation.

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