Chemical Stability Aspects of BaCe0.7–xFexZr0.2Y0.1O3–δ Mixed Ionic-Electronic Conductors as Promising Electrodes for Protonic Ceramic Fuel Cells
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Chemical Stability Aspects of BaCe0.7–xFexZr0.2Y0.1O3–δ Mixed Ionic-Electronic Conductors as Promising Electrodes for Protonic Ceramic Fuel Cells
|
|
| Автор |
Tarutina, L. R.
Starostina, I. A. Vdovin, G. K. Pershina, S. V. Vovkotrub, E. G. Murashkina, A. A. |
|
| Тематика |
MIXED ION-ELECTRON CONDUCTORS
PROTONIC CERAMIC FUEL CELLS CHEMICAL STABILITY BARIUM FERRITE CHEMICAL INTERACTION CRYSTAL STRUCTURE |
|
| Описание |
No phase transition in BCZYF0.6 at temperatures from 50 °C to 1000 °C was confirmed.
Long-term co-annealing of powder mixtures BCZYFx and BCZYYb at 1200 °C allows predicting the relative stability of electrode and electrolyte phases. The investigated electrode materials have acceptable chemical stability in the atmosphere with high (70 vol.%) humidity, carbon dioxide, and hydrogen. Received: 07.11.23. Revised: 04.12.23. Accepted: 04.12.23. Available online: 08.12.23. Mixed ion-electron conductors (MIECs) are promising materials for air electrodes for protonic ceramic fuel cells (PCFCs) or oxygen permeation membranes. In this work, various aspects of the chemical stability of Cofree MIEC materials, BaCe0.7–xFexZr0.2Y0.1O3–δ, were studied, including their interaction with another functional material (BaCe0.5Zr0.3Y0.1Yb0.1O3–δ-based proton-conducting electrolyte) and gas components (H2O, CO2, and H2). Chemical compatibility studies indicate no visible chemical interaction between the electrode and electrolyte materials even at 1200 °C, which is significantly higher than the operating temperatures (600–800 °C) of PCFCs. The treatments of BaCe0.7–xFexZr0.2Y0.1O3–δ in different atmospheres at 1100 °C, according to the XRD, SEM, IR and Raman spectroscopy data, resulted in the formation of impurity phases. However, their extremely small amounts suggest that they may not form at the operating temperatures. Thus, it can be assumed that the studied materials can be good candidates for various electrochemical applications. This work was financially supported by the President of the Russian Federation’s scholarship to junior scientists and postgraduate students, no. П-210.2022.1, https://grants.ex-tech.ru. The authors acknowledge St. Petersburg State University and the Centre for XRD Studies. Characterizations of pow-der and ceramic materials were carried out at the Shared Access Centre “Composition of Compounds” of Institute of High-Temperature Electrochemistry. |
|
| Дата |
2024-01-18T12:45:23Z
2024-01-18T12:45:23Z 2023 |
|
| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
|
| Идентификатор |
Chemical Stability Aspects of BaCe0.7–xFexZr0.2Y0.1O3–δ Mixed Ionic-Electronic Conductors as Promising Electrodes for Protonic Ceramic Fuel Cells / L. R. Tarutina, I. A. Starostina, G. K. Vdovin, S. V. Pershina, E. G. Vovkotrub, A. Murashkina // Chimica Techno Acta. — 2023. — Vol. 10, No. 4. — № 202310414.
2411-1414 http://elar.urfu.ru/handle/10995/129332 https://www.elibrary.ru/item.asp?id=60040556 10.15826/chimtech.2023.10.4.14 |
|
| Язык |
en
|
|
| Связанные ресурсы |
Chimica Techno Acta. 2023. Vol. 10. № 4
|
|
| Формат |
application/pdf
|
|
| Издатель |
Уральский федеральный университет
Ural Federal University |
|