Densification and Proton Conductivity of La1-xBaxScO3-δ Electrolyte Membranes
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Densification and Proton Conductivity of La1-xBaxScO3-δ Electrolyte Membranes
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| Автор |
Lesnichyova, A.
Belyakov, S. Stroeva, A. Petrova, S. Kaichev, V. Kuzmin, A. |
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| Тематика |
LANTHANUM SCANDATE
PROTON CONDUCTIVITY SINTERING ADDITIVE ADDITIVES BARIUM COMPOUNDS ELECTROLYTES LANTHANUM PROTON CONDUCTIVITY SINTERING CERAMIC DENSITY DENSE CERAMICS DENSIFICATIONS ELECTROLYTE MEMBRANE HIGH PROCESSING TEMPERATURES LANTHANUM SCANDATE PARTIAL DECOMPOSITION SCANDATES SINTERING ADDITIVES SINTERING EFFECT LANTHANUM COMPOUNDS |
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| Описание |
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.
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| Дата |
2024-04-08T11:06:21Z
2024-04-08T11:06:21Z 2022 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
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 2077-0375 Final All Open Access; Gold Open Access; Green Open Access https://www.mdpi.com/2077-0375/12/11/1084/pdf?version=1668149288 https://www.mdpi.com/2077-0375/12/11/1084/pdf?version=1668149288 http://elar.urfu.ru/handle/10995/131303 10.3390/membranes12111084 85149530129 000884345100001 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
MDPI
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| Источник |
Membranes
Membranes |
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