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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26403


    Title: Influence of hot-pressing temperature on the performance of PEMFC and catalytic activity
    Authors: Lin,JC;Lai,CM;Ting,FP;Chyou,SD;Hsueh,KL
    Contributors: 化學工程與材料工程學系
    Keywords: MEMBRANE FUEL-CELLS;EMPIRICAL-EQUATION;ELECTRODES;IMPEDANCE;TRANSPORTATION;TECHNOLOGY;BEHAVIOR;PLATES
    Date: 2009
    Issue Date: 2010-06-29 17:27:15 (UTC+8)
    Publisher: 中央大學
    Abstract: The influence of hot-pressing temperature on catalytic activity and the performance of proton exchange membrane fuel cells (PEMFCs) was investigated using current-voltage (I-V) polarization, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). EIS provided detailed information on the contribution, from high to low frequencies, of internal impedance (R-s), interfacial impedance (R-if) and reaction impedance (R-rxn). The ohmic resistance of the cell (R-Omega) was estimated from the I-V diagram for comparison with the R-s and R-if impedances. The Rif is useful for diagnosing catalytic activity and interpreting PEMFC performance. A cell was hot-pressed at 125 degrees C (near the transition temperature of Nafion), an optimum temperature for lowest ohmic resistance and total impedance in response to a maximal catalyst-specific activity.
    Relation: JOURNAL OF APPLIED ELECTROCHEMISTRY
    Appears in Collections:[化學工程與材料工程研究所] 期刊論文

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