• durability of anode supported solid oxides fuel cells (sofc) under direct dry-reforming of methane

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 569
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the present work investigates the performance and degradation mechanisms of a ni-based anode supported solid oxides fuel cells (sofc) operating at ∼800 °c on direct internal reforming of dry ch4–co2 mixtures. the catalytic properties of the anode support were first studied in a micro-reactor configuration to determine safe conditions (i.e., without carbon formation) under which a dry conversion of the methane can occur directly within the fuel cell. a full electrochemical characterization of complete cells followed to preliminarily assess their resistance towards carbon formation when operating on direct dry-reforming. ageing tests of ∼300 h each have been performed in galvanostatic mode, with impedance spectra taken every 50 h of continuous operation to monitor the trend over the time of the different polarization contributions. post-mortemmicrostructural analysis was carried out after each experiment to verify the morphology and nucleation of carbon deposited in the anode electrode.

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