Solution processed La0.8Sr0.2MnO3–Bi1.44Y0.56O3 composite thin films with self-assembled nanolayered structures

To lower solid oxide fuel cell operating temperatures down to ≤ 700°C, we fabricated La 0.8 Sr 0.2 MnO 3 –Bi 1.44 Y 0.56 O 3 (LSM-YDB) cathode films from a “single-pot” mixture of polymeric LSM and YDB precursors, which yielded nanocomposite-structured films with long triple phase boundary lengths....

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Bibliographic Details
Published in:MRS communications 2023-12, Vol.13 (6), p.1357-1362
Main Authors: Aktas, Busra, Bal, Batuhan, Sezen, Meltem, Ow-Yang, Cleva W., Unver, M. Unsal, Buyukaksoy, Aligul
Format: Article
Language:English
Subjects:
Biomaterials
Characterization and Evaluation of Materials
Chemistry and Materials Science
Materials Engineering
Materials Science
Nanotechnology
Polymer Sciences
Research Letter
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Summary:To lower solid oxide fuel cell operating temperatures down to ≤ 700°C, we fabricated La 0.8 Sr 0.2 MnO 3 –Bi 1.44 Y 0.56 O 3 (LSM-YDB) cathode films from a “single-pot” mixture of polymeric LSM and YDB precursors, which yielded nanocomposite-structured films with long triple phase boundary lengths. Alternating nanolayers of LSM and YDB phases were revealed by STEM-EDS analysis. The microstructure forming at 600°C contained YDB nanoparticles in the LSM phase and LSM nanoparticles in the YDB phase, ensuring 3-D interconnectivity for each phase and a percolation pathway. An area specific polarization resistance of 0.55 cm 2 was measured at 600°C. Graphical Abstract
ISSN:2159-6867
2159-6867
DOI:10.1557/s43579-023-00461-z