Synthesis and electrochemical characterization of La0.75Sr0.25Mn0.5Cr0.5?xAlxO3, for IT- and HT-SOFCs |
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| Authors: | Abdalla M Abdalla Madeha Kamel Shahzad Hossain John T S Irvine Abul K Azad |
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| Affiliation: | 1. Mechanical Engineering Department, Faculty of Engineering, Suez Canal University, Ismailia, Egypt;2. Institute of Nuclear Science and Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh;3. Center for Advanced Material, School of Chemistry, University of St Andrews, Scotland, UK;4. Faculty of Integrated Technologies, Universiti Brunei Darussalam, Gadong, Brunei Darussalam |
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| Abstract: | The main emphasis of this work is to create a new perovskite material with three different compositions (La0.75Sr0.25Mn0.5Cr0.5?xAlxO3, x = 0.1, 0.2, 0.3) applied in both Intermediate- and High-temperature Solid Oxide Fuel Cells (IT- and HT-SOFCs). Perovskite-type polycrystalline La0.75Sr0.25Mn0.5Cr0.5?xAlxO3?δ (x = 0.1, 0.2, 0.3) powders were synthesized and formed in a single phase structure by a dry chemistry route (standard solid-state reaction method). The effect of Al doping on physicochemical and surface properties has been discovered. The compounds were crystallized in single phase rhombohedral symmetry (R-3C Space. Group). Total conductivity of Al doping in wet 5% H2 was higher than both dry 5% H2 and air. The obtained results enhance the electro-catalytic performance and the material conductivity as well, which will be good for anode materials in IT- and HT-SOFCs and the optimum doping is 10%. |
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| Keywords: | AC conductivity binding energy electrical conductivity perovskite XPS |
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