Characterization of LSGM films obtained by electrophoretic deposition (EPD) |
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| Institution: | 1. Engineering Faculty, University of Bergamo, INSTM R.U.-Unibg, Viale Marconi 5, 24044 Dalmine, Italy;2. Department of Materials Science and Chem. Eng. Politecnico of Turin, INSTM R.U.-PoliTO, Lab. LINCE, Corso Duca degli Abruzzi 24, 10121 Turin, Italy;3. CNR-IENI and Department of Physical Chemistry, University of Pavia, Viale Taramelli, 16, 27100 Pavia, Italy;1. Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu City 300, Taiwan, ROC;2. Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei City 106, Taiwan, ROC;1. National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China;2. Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China;3. School of Metallurgy Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China;1. Institute of Electrophysics, Ural Branch of Russian Academy of Sciences, 106 Amundsena, 620016 Ekaterinburg, Russia;2. Institute of Radioengineering and Electronics named after V.A. Kotelnikov, Russian Academy of Sciences, Vvedensky Sq. 1, 141190 Fryazino, Russia;3. Muenster University of Applied Science, Stegerwaldstr. 39, 48565 Steinfurt, Germany;4. Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China |
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| Abstract: | The application of the electrophoretic deposition (EPD) technique to the preparation of high quality electrolyte films for intermediate temperature solid oxide fuel cells (IT-SOFCs) was investigated. Films of La0.83Sr0.17Ga0.83Mg0.17O2.83 (LSGM) were deposited on Pt and La0.8Sr0.2MnO3 (LSM) substrates from suspensions in acetone/ethanol (3:1 by volume) mixture solvent and sintered at 1300 °C. Pt supported LSGM films, 10–20 μm thick, exhibited good adhesion to the Pt substrate, well-distributed microporosity and some surface roughness. LSM supported films exhibited cracking after sintering at 1300 °C for 3 h. Up to 900 °C the bulk conductivity of the Pt supported LSGM film showed the same behaviour of LSGM pellet (Ea = 0.93 eV and 0.99 eV, respectively). The LSGM film exhibited lower bulk electrical conductivity than the latter (4.1 × 10? 3 and 4.4 × 10? 2 Ω? 1 cm? 1, respectively, at 700 °C). This difference should be ascribed to the slight Ga depletion in the LSGM film. An important issue remains the selection of adequate electrode for LSGM electrolyte films. |
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