Academic Journal
Densification and Proton Conductivity of La1-xBaxScO3-δ Electrolyte Membranes
| العنوان: | Densification and Proton Conductivity of La1-xBaxScO3-δ Electrolyte Membranes |
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| المؤلفون: | Lesnichyova, A., Belyakov, S., Stroeva, A., Petrova, S., Kaichev, V., Kuzmin, A. |
| المصدر: | Membranes |
| بيانات النشر: | MDPI |
| سنة النشر: | 2022 |
| المجموعة: | Ural Federal University (URFU): ELAR / Уральский федеральный университет: электронный архив УрФУ |
| مصطلحات موضوعية: | LANTHANUM SCANDATE, PROTON CONDUCTIVITY, SINTERING ADDITIVE, ADDITIVES, BARIUM COMPOUNDS, ELECTROLYTES, LANTHANUM, SINTERING, CERAMIC DENSITY, DENSE CERAMICS, DENSIFICATIONS, ELECTROLYTE MEMBRANE, HIGH PROCESSING TEMPERATURES, PARTIAL DECOMPOSITION, SCANDATES, SINTERING ADDITIVES, SINTERING EFFECT, LANTHANUM COMPOUNDS |
| الوصف: | Bain La1-xBaxScO3-δ impairs sintering and leads to a decrease in its ceramic density. Two approaches have been studied for obtaining dense ceramics: using a high processing temperature and the introduction of a Co3O4 sintering additive. An addition of only 0.5 wt% of Co3O4 sintering additive, despite the positive sintering effect, causes a noticeable violation of stoichiometry, with partial decomposition of the material. This can lead to the formation of cationic vacancies, which form associates with oxygen vacancies and significantly reduce the oxygen ion and proton conductivity of the materials. There is also a partial substitution of Co for Sc in La1-xBaxScO3-δ, which reduces the stability of protons: it reduces the enthalpy of the hydration reaction, but increases the mobility of protons. Thus, the Co3O4 sintering additive causes a complex of negative effects on the conductivity of La1-xBaxScO3-δ materials. Only high-temperature (1800 °C) processing with protection against Ba loss contributes to the production of dense La1-xBaxScO3-δ ceramics. The chemical composition of such ceramics corresponds well to the specified one, which ensures high water uptake and, consequently, high proton conductivity. © 2022 by the authors. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2077-0375 |
| Relation: | Lesnichyova, A, Belyakov, S, Stroeva, A, Petrova, S, Kaichev, V & Kuzmin, A 2022, 'Densification and Proton Conductivity of La1-xBaxScO3-δ Electrolyte Membranes', Membranes, Том. 12, № 11, стр. 1084. https://doi.org/10.3390/membranes12111084; Lesnichyova, A., Belyakov, S., Stroeva, A., Petrova, S., Kaichev, V., & Kuzmin, A. (2022). Densification and Proton Conductivity of La1-xBaxScO3-δ Electrolyte Membranes. Membranes, 12(11), 1084. https://doi.org/10.3390/membranes12111084; Final; All Open Access; Gold Open Access; Green Open Access; https://www.mdpi.com/2077-0375/12/11/1084/pdf?version=1668149288; http://elar.urfu.ru/handle/10995/131303; 85149530129; 000884345100001 |
| DOI: | 10.3390/membranes12111084 |
| الاتاحة: | http://elar.urfu.ru/handle/10995/131303 https://www.mdpi.com/2077-0375/12/11/1084/pdf?version=1668149288 https://doi.org/10.3390/membranes12111084 |
| Rights: | info:eu-repo/semantics/openAccess ; cc-by ; https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.8E35F0A0 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20770375 |
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| DOI: | 10.3390/membranes12111084 |