Synthesis of La0.9Sr0.1Ga0.8Mg0.2O3−δ electrolyte via ethylene glycol route and its characterizations for IT-SOFC
作者： R Raghvendra , RK Singh , P Singh
DOI: 10.1016/J.CERAMINT.2013.12.056
关键词:
摘要: Abstract Strontium and magnesium doped lanthanum gallate (La0.9Sr0.1Ga0.8Mg0.2O3−δ), known as LSGM, was first prepared via ethylene glycol method. This route of preparation showed improved electrical conductivity, better surface area high density. X-ray diffraction patterns LSGM sintered at different temperatures indicated that pure phase formed after sintering 1400 °C. Rietveld refinement confirmed the formation perovskite orthorhombic LSGM. The sample 99% relative Scanning electron microscopic study also depicted fairly densed grain morphology. photoelectron spectroscopy measurement stability in air existence constituent elements their characteristic valence states. A without porosity observed BET measurement. Average thermal expansion coefficient found to be 9.78×10−6/°C measured temperature range (RT–1000 °C). frequency dependent conductivity 400–800 °C. Total pellet 0.056 S cm−1 800 °C.
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