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- W2366475989 abstract "The pow ders of La0.7Sr0.3-xCaxCo0.9Fe0.1O3-% (LSCCF, x = 0.05,0.10,0.15,0.20) were synthesized using a chemicalco-precipitation method with La(NO3)3·6 H2O,Sr(NO3)2,Ca (NO3)2·4 H2O,Co(NO3)2·6 H2O and Fe (NO3)3·9 H2O as precur-sors and NH4OH as precipitant. The formation process, crystal structure and particle size micrograph of LSCCF powders, cal-cined at 600 ℃, 800 ℃ and 1 000 ℃for 4 h, respecitively, were investigated with DSC-TG,XRD and SEM.The experimentalresults show that the formation process of LSCCF powders can be divided into four stages: dehydration, decomposition of re-actants, formation of LaCoO3 based oxides and formation of LSCCF solid solution, and that the calcined powders at 800 ℃for 4 h are all of single perovskite phase. The electrical conductivity of the sintered samples of LSCCF measured byfour-probe DC method is higher than 250 S·cm- 1 from 600 ℃ to 800 ℃ in air. The conduction mechanism for LSCCF pow-ders is attributable to the adiabatic-hopping of p-type small polarons.The synthesized LSCCF powders as cathode material canmeet the demands for intermediate temperature solid oxide fuel cells (ITSOFCs)." @default.
- W2366475989 created "2016-06-24" @default.
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- W2366475989 date "2005-01-01" @default.
- W2366475989 modified "2023-09-28" @default.
- W2366475989 title "Co-precipitation synthesis of La_(0.7)Sr_(0.3-x)Ca_xCo_(0.9)Fe_(0.1)O_(3-■)and characterization of its performance" @default.
- W2366475989 hasPublicationYear "2005" @default.
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