LAPSE:2023.30727
Published Article
LAPSE:2023.30727
Implications of Cation Interdiffusion between Double Perovskite Cathode and Proton-Conducting Electrolyte for Performance of Solid Oxide Fuel Cells
Nadezhda S. Tsvetkova, Dmitry A. Malyshkin, Ivan L. Ivanov, Dmitry S. Tsvetkov, Andrey Yu. Zuev
April 17, 2023
Chemical compatibility and cation interdiffusion between the double perovskite cobaltites RBaCo2O6−δ (R = Gd, Pr) and proton-conducting electrolyte BaZr0.8Y0.2O3−δ were studied. Chemical interaction was found to occur already at 1100 °C as a result of the partial dissolution of RBaCo2O6−δ (R = Gd, Pr) in BaZr0.8Y0.2O3−δ. Analysis of the element distribution along the cross sections of diffusion couples RBaCo2O6−δ(R = Gd, Pr)|BaZr0.8Y0.2O3−δ showed strong interdiffusion of cations, with cobalt being the most mobile one. Its diffusion depth in the electrolyte reaches up to several hundreds of micrometers. The addition of NiO as a sintering aid to BaZr0.8Y0.2O3−δ promotes cation diffusion especially through the grain boundary mechanism, increasing the diffusion depth of Co. The possible implications of cation interdiffusion on the performance of proton-conducting SOFCs are discussed based on the results obtained.
Keywords
cathode materials, cation interdiffusion, double perovskites, proton-conducting solid electrolyte, Solid Oxide Fuel Cells
Subject
Suggested Citation
Tsvetkova NS, Malyshkin DA, Ivanov IL, Tsvetkov DS, Zuev AY. Implications of Cation Interdiffusion between Double Perovskite Cathode and Proton-Conducting Electrolyte for Performance of Solid Oxide Fuel Cells. (2023). LAPSE:2023.30727
Author Affiliations
Tsvetkova NS: Institute of Natural Sciences and Mathematics, Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
Malyshkin DA: Laboratory of Hydrogen Energy, Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
Ivanov IL: Laboratory of Hydrogen Energy, Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia [ORCID]
Tsvetkov DS: Institute of Natural Sciences and Mathematics, Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia; Laboratory of Hydrogen Energy, Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
Zuev AY: Institute of Natural Sciences and Mathematics, Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia [ORCID]
Journal Name
Energies
Volume
16
Issue
7
First Page
2980
Year
2023
Publication Date
2023-03-24
Published Version
ISSN
1996-1073
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Original Submission
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PII: en16072980, Publication Type: Journal Article
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LAPSE:2023.30727
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doi:10.3390/en16072980
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Apr 17, 2023
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