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- W2073554639 abstract "Pr2CuO4–Ce0.9Gd0.1O1.95 (PCO–GDC) composites screen printed on Ce0.9Gd0.1O1.95 (GDC) electrolyte were considered as a cathode material for intermediate temperature solid oxide fuel cells (IT-SOFCs). Phase composition, microstructure and electrochemical properties were investigated by X-ray powder diffraction (XRD), scanning electron microscopy and AC impedance spectroscopy, respectively. The oxygen reduction on porous PCO–GDC electrode applied on CGO electrolyte was studied in a symmetrical cell configuration by AC impedance spectroscopy at OCV conditions at 670–730 °C and pO2=10-2-0.21atm. The charge transfer process and the dissociation of adsorbed molecular oxygen were found to be rate-determining steps of the oxygen reduction reaction. Results reveal that both GDC addition and electrode morphology have strong influence on area specific resistance (ASR) of the electrode/electrolyte interface. The lowest ASR value of 0.41 Ω cm2 was achieved for the composition containing 33 wt.% GDC at 700 °С in air. The data obtained allow to consider the PCO–GDC33 composite as a promising cathode material for IT-SOFCs." @default.
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- W2073554639 date "2014-08-01" @default.
- W2073554639 modified "2023-09-24" @default.
- W2073554639 title "Electrochemical characterization of Pr2CuO4–Ce0.9Gd0.1O1.95 composite cathodes for solid oxide fuel cells" @default.
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- W2073554639 doi "https://doi.org/10.1016/j.jallcom.2014.03.179" @default.
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