Physicochemical Properties of Potential Cathode La1-xBaxMn1-yCryO3 and Anode Sr2NiMoO6 Materials for Solid-Oxide Fuel Cells
The homogeneity area boundaries of La1-xBaxMn1-yCryO3 solid solutions possessing orthorhombic and rhombohedral structures were established. A state diagram at 1373 K in air in the quaternary oxide system LaMnO3-BaMnO3-BaCrO4-LaCrO3 was drawn for the first time. Partial substitution of Mn with Cr in...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
al-Farabi Kazakh National University
2012-06-01
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| Series: | Eurasian Chemico-Technological Journal |
| Online Access: | http://ect-journal.kz/index.php/ectj/article/view/381 |
| Summary: | The homogeneity area boundaries of La1-xBaxMn1-yCryO3 solid solutions possessing orthorhombic and rhombohedral structures were established. A state diagram at 1373 K in air in the quaternary oxide system LaMnO3-BaMnO3-BaCrO4-LaCrO3 was drawn for the first time. Partial substitution of Mn with Cr in La1-xBaxMnO3 stored the thermal compatibility of the cathode with the any traditionally used electrolyte but reduced the electric conductivity of the potential cathode. Based on the linear lengthening measurements of La1-xBaxMn1-yCryO3 and Sr2NiMoO6 samples the values of the thermal expansion coefficients were calculated. It was established that the temperature of the structure transition from a
tetragonal to a cubic phase in Sr2NiMoO6 occurred at 508 K. It was stated that double perovskite Sr2NiMoO6 in air did not react with (La0.9Sr0.1)0.98Ga0.8Mg0.2O3 up to 1073 K. |
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| ISSN: | 1562-3920 2522-4867 |