4808 燃料電池運転状態診断方法の研究(G07-2 エンジンシステム(2),G07 エンジンシステム) 4808 Research on Diagnosis Technique of PEFC Running Condition

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We have investigated the behavior of a polymer electrolyte fuel cell (PEFC) operated with supplying carbon monoxide (CO) in addition hydrogen (H_2) into the anode in order to develop the PEFC diagnosis method for anode CO poisoning. Using current-voltage (I-V) curves and electrochemical impedance spectroscopy (EIS), we analyze the overvoltage, electrooxidation of CO and phenomena of CO adsorption/desorption at the anode. I-V curves show that the output voltage decreases owing to the CO poisoning when anode potential is lower than CO electrooxidation potential. EIS shows that a PEFC can be simulated with an equivalent circuit model consisting of several elements ; activation and concentration overvoltages and adsorption/desorption. Their characteristic values can be used for the diagnosis of the CO poisoning.

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  • 年次大会講演論文集

    年次大会講演論文集 2006.3(0), 317-318, 2006

    一般社団法人 日本機械学会

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