Synthesis and characterization of La0.85Sr0.15Ga0.85Mg0.15O3?δ electrolyte by steric entrapment synthesis method |
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| Affiliation: | 1. Department of Materials Science and Engineering, Royal Institute of Technology, SE 100 44, Stockholm, Sweden;2. Structural Chemistry, Arrhenius Laboratory, Stockholm University, SE 106 91, Stockholm, Sweden;1. Commissariat à l''Energie Atomique et aux Energies Alternatives, CEA, DEN, DTCD, SPDE, F 30207 Bagnols sur Cèze, France;2. Aix Marseille Université, CNRS, Centrale Marseille, M2P2 UMR 7340, Equipe Procédés Membranaires (EPM), Europôle de l''Arbois, BP80, Pavillon Laennec, Hall C, 13545 Aix en Provence Cedex, France;1. Texas Materials Institute and Materials Science and Engineering Program, The University of Texas at Austin, Austin, TX 78712, United States;2. Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco, E-28049 Madrid, Spain;3. Institut Laue Langevin, BP 156X, Grenoble F-38042, France;1. Thin Film & Solar Studies Research Laboratory, Department of Physics (Appl. Elect.), School of Physical Sciences, Solapur University, Solapur 413255, M. S., India;2. Tuljaram Chaturchand College, Baramati, M. S., India;3. Polymer Chemistry Department, Solapur University, Solapur 413255, M. S., India;1. INRA, UMR1213 Herbivores, F-63122 Saint-Genès-Champanelle, France;2. Clermont Université, VetAgro Sup, UMR Herbivores, BP 10448, F-63000 Clermont-Ferrand, France;3. Université de Lyon, VetAgro Sup, UMR1213 Herbivores, F-69280 Marcy l?Etoile, France;4. INRA, UMR 1198 Biologie du Développement et Reproduction, F-78352 Jouy-en-Josas, France;5. INRA, UCEA Bressonvilliers, 91630 Leudeville France;1. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia;2. Chemistry Department, Faculty of Science, Benha University, Benha, Egypt;3. Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia;4. King Abdullah University of Science and Technology, Jeddah, Saudi Arabia |
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| Abstract: | Strontium and magnesium doped lanthanum gallate La0.85Sr0.15Ga0.85Mg0.15O3?δ (LSGM) oxygen ionic conducting ceramics were prepared by a steric entrapment synthesis (SES) method, which is a polymeric precursor synthesis method by using polyvinyl alcohol in aqueous solution. The perovskite LSGM phase formed essentially at a calcination temperature of 900 °C. Pure and single perovskite LSGM phase with high relative density of 97.1% was obtained after sintering at 1450 °C, while the relative density of the LSGM sample sintered at the same temperature by solid state reaction (SSR) method was 80.6% in present experiment. Comparing with SSR synthesis method, the sintering temperature by SES can be reduced at least 100 °C. Impedance spectra revealed that the grain-boundary resistivity of LSGM synthesized by SES was smaller than that by SSR method, and the conductivities of the samples by SES were higher than those by SSR method at all measuring temperatures. |
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