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Synthesis and chara...
Synthesis and characterization of Sm1-xZrxFe1-yMgyO3 (x, y = 0.5, 0.7, 0.9) as possible electrolytes for SOFCs
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Abdalla, Abdalla M. (author)
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Hossain, S. (author)
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Radenahmad, N. (author)
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Petra, P. M. I. (author)
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- Somalu, Mahendra R. (author)
- Universiti Kebangsaan Malaysia,National University of Malaysia
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- Rahman, Habibur Seikh Mohammad, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Eriksson, Sten, 1958 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Azad, A. K. (author)
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(creator_code:org_t)
- 2018
- 2018
- English.
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In: Key Engineering Materials. - 1013-9826 .- 1662-9795. ; 765 KEM, s. 49-53
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https://doi.org/10.4...
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Abstract
Subject headings
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- The novel perovskite oxide series of Sm 1-x Zr x Fe 1-y Mg y O 3 (x,y = 0.5, 0.7, 0.9) were synthesized by solid state reaction method. X-ray diffraction (XRD), Rietveld refinement, scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and conductivity analysis were carried out. XRD patterns of sintered materials revealed the shifted Bragg reflection to higher angle for the higher content of Zr and Mg. This is related to the ionic size of the dopant elements. Rietveld refinement showed that all compounds crystallized in cubic space group of Fm-3m. SEM images showed that the grains were well defined with highly dense surfaces makes it potential as an electrolyte material in solid oxide fuel cells (SOFCs) or gases sensors. Impedance spectroscopy at 550-800 °C shows that conductivity is higher at higher temperature. Sm 0.5 Zr 0.5 Fe 0.5 Mg 0.5 O 3 shows the highest conductivity of 5.451 × 10 -3 S cm -1 at 800 °C. It was observed that 50% molar ratio of Mg and Zr doping performed highest conductivity.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Keramteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Ceramics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- SOFCs
- Dense material
- SEM
- Rietveld refinement
- Perovskite oxides
- Electrochemical performance
Publication and Content Type
- kon (subject category)
- ref (subject category)
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