Abstract
Characteristics of a Ni/YSZ cermet anode and a Pt/YSZ cermet anode of solid oxide fuel cell (SOFC) were investigated in dry CH4/Ar fuel for various operating temperatures (750 to 1000° C). The partial pressure of CH4 was 0.045atm. The DC polarization of the two anodes in CH4/Ar was measured by using the current interruption method. For comparison, the anode characteristics in H2 fuel were also evaluated before the experiments in CH4/Ar. The exhaust gas from the anodes was analyzed by using gas chromatography. The electrochemical and chemical reactions on both anodes were determined by evaluating the composition of exhaust gas and DC polarization curves.
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