We are developing a method of diagnosing fuel-cell deterioration in phosphoric-acid-fuel-cell (PAFC) power plants that use a small single cell, based on measuring its current-voltage (I-V) characteristics. As the fuel-cell deteriorates, the coefficient k in the linear equation (V=kI+V0), which approximates the I-V characteristics, increases and the constant V0 decreases. Thus k and V0 can be used for diagnosis as well as the cell voltage. The ratio of the maximum power to the rated power PMAX/PR approaches 1.0 as fuel-cell deterioration proceeds. Therefore, PMAX/PR can be used as a parameter for predicting fuel-cell lifetime when the minimum output power PMIN during fuel-cell power generation is given.


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    Title :

    Diagnosis of Fuel-Cell Deterioration Using Fuel-Cell Current-Voltage Characteristics


    Additional title:

    Sae Technical Papers


    Contributors:
    Babasaki, T. (author) / Take, T. (author) / Yamashita, T. (author)

    Conference:

    34th Intersociety Energy Conversion Engineering Conference ; 1999



    Publication date :

    1999-08-02




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :


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