Synthesis and characterization of La0.9Sr0.1Ga0.8Mg0.2O3−δ intermediate-temperature electrolyte using conventional solid state reaction
作者： Minxia Li , Yaohui Zhang , Maozhong An , Zhe Lü , Xiqiang Huang
DOI: 10.1016/J.JPOWSOUR.2012.06.101
关键词: Ionic conductivity 、 Inorganic chemistry 、 Grain size 、 Electrolyte 、 Perovskite (structure) 、 Materials science 、 Anode 、 Conductivity 、 Relative density 、 Phase (matter) 、 Analytical chemistry
摘要: Abstract The perovskite-type La0.9Sr0.1Ga0.8Mg0.2O3-δ(LSGM9182) with high oxygen-ionic conductivity is successfully synthesized using conventional solid-state reaction. phase composition, grain size distribution, relative density, and of the samples are studied. XRD result shows that main perovskite LaGaO3 can be produced at 1,250 °C, trace amount second LaSrGaO4. When temperature increases to 1,400 °C, pure LSGM obtained. density pellets sintered 1,400 °C reaches 98.08%. average final powders ∼0.12 μm, which appropriate for deposition electrolyte film. ideal conductivities 0.04, 0.06, 0.08 S cm−1 obtained 700 °C, 750 °C, 800 °C, respectively. Porous anode supported single cells film fabricated as-prepared provide an open-circuit voltage above 1.0 V, revealing gas-tight crack-free.
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