Electrical conductivity and thermal expansion of La0.8Sr0.2(Mn,Fe,Co)O3-δ perovskites |
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| Institution: | 1. Department of Chemical & Process Engineering, University of Strathclyde, Glasgow G1 1XJ, UK;2. School of Engineering, University of Warwick, Coventry CV4 7AL, UK;1. Institute for Advanced Materials, Jiangsu University, Zhenjiang 212013, PR China;2. Hunan Engineering Laboratory of Power Battery Cathode Materials, Changsha Research Institute of Mining and Metallurgy, Changsha 410012, China;1. School of Pharmaceutical and Chemical Engineering, Taizhou University, Jiaojiang, 318000, China;2. Department of Chemistry, University of Waterloo, Ontario, N2L 3G1, Canada;3. College of Energy & Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China;4. College of Materials Science and Engineering, China Jiliang University, Hangzhou, 310018, China;1. High-Temperature Energy Materials Research Center, Korea Institute of Science and Technology, Seoul, Republic of Korea;2. Department of Materials Science & Engineering, Korea University, Seoul, Republic of Korea |
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| Abstract: | La1?xSrxMeO3 (Me = Mn, Co, Fe) perovskites are used as cathodes and are also attractive materials for application as the contact layer between cathode and interconnect in solid oxide fuel cells. In this contribution, three perovskite series, La0.8Sr0.2Mn1?xCoxO3-δ (series 1), La0.8Sr0.2Fe1?xCoxO3-δ (series 2) and La0.8Sr0.2Mn1?x/2Fe(1?x)/2CoxO3-δ (series 3) with x = 0, 0.25, 0.5, 0.75 and 1 were re-investigated under identical synthesis and measurement conditions with the aim of obtaining a full overview of the quasi-ternary system La0.8Sr0.2MnO3-δ–La0.8Sr0.2FeO3-δ–La0.8Sr0.2CoO3-δ. The distribution of the different crystallographic phases in the selected series, the DC electrical conductivity and the thermal expansion coefficients are presented. |
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