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- W2005055446 abstract "Abstract This paper reports on synthesis and evaluation of an intergrowth oxide, GdSrCoO 4+δ (GSCO), as a new cathode material for intermediate-temperature solid oxide fuel cells. The oxygen content and the thermal expansion coefficient of GSCO oxide powders were measured. The GSCO oxide shows a semi-conducting behaviour in air with conductivities increasing from 16 S cm −1 at 500 °C to 65 S cm −1 at 800 °C. The catalytic activities of GSCO oxides for oxygen reduction reactions are evaluated using symmetrical impregnated GdSrCoO 4+δ –La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3 (GSCO-LSGM) cathode fuel cells. The polarization resistances for such composites increase from 0.072 Ω cm 2 at 650 °C to 0.55 Ω cm 2 at 550 °C. Furthermore, thin LSGM electrolyte supported fuel cells with impregnated Ni anodes and GSCO cathodes exibit high power densities at reduced temperatures, e.g. , 782 mW cm −2 at 550 °C and 1314 mW cm −2 at 650 °C, respectively. These results demonstrate that GSCO is a promising cathode candidate for intermediate-temperature solid oxide fuel cells with LSGM electrolytes." @default.
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- W2005055446 date "2014-07-01" @default.
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- W2005055446 title "Evaluation of GdSrCoO4+δ intergrowth oxides as cathode materials for intermediate-temperature solid oxide fuel cells" @default.
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- W2005055446 doi "https://doi.org/10.1016/j.electacta.2014.04.078" @default.
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