Abstract
Ultra fine Pr0.6Sr0.4CoO3-δ nanopowder as a cathode material for intermediate temperature solid oxide fuel cell has been synthesized by a solution combustion method. The X-ray diffraction, SEM, EDX, AFM, BET and electrochemical impedance methods have been used for the analysis of Pr0.6Sr0.4CoO3-δ cathodes and Ni/Ce0.9Gd0.1O1.95 anodes, prepared at different co-firing temperatures with Ce0.9Gd0.1O1.95 electrolyte. Development of microporous cathode with specific surface area SBET = 217 m2 g 1 and medium pore radius R = 16 Aå, and Ni anode with SBET = 13 m2 g 1 and R = 16 Aå was established using NLDFT method. The weak influence of the co-sintering temperature of the anode and electrolyte on the power density has been observed. The shape of the Nyquist plots, phase angle and logZ vs. logf plots show that there is only one main rate-determining process and therefore it is impossible to analyze separately the anode and cathode processes.
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