Oxygen-Ion and Proton Transport of Origin and Ca-Doped La2ZnNdO5.5 Materials
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Oxygen-Ion and Proton Transport of Origin and Ca-Doped La2ZnNdO5.5 Materials
|
|
| Автор |
Belova, K.
Egorova, A. Pachina, S. Animitsa, I. Medvedev, D. |
|
| Тематика |
HYDROGEN ENERGY
OXYGEN-ION CONDUCTIVITY PROTON CONDUCTIVITY RARE EARTH OXIDES |
|
| Описание |
Oxygen-ionic and proton-conducting oxides are widely studied materials for their application in various electrochemical devices such as solid oxide fuel cells and electrolyzers. Rare earth oxides are known as a class of ionic conductors. In this paper, La2ZnNdO5.5 and its Ca-doped derivatives La2Nd0.9Ca0.1ZnO5.45 and La2ZnNd0.9Ca0.1O5.45 were obtained by a solid-state reaction route. Phase composition, lattice parameters, and hydration capability were investigated by X-ray diffraction and thermogravimetric analyses. The conductivities of these materials were measured by the electrochemical impedance spectroscopy technique in dry (pH2O = 3.5 × 10−5 atm) and wet (pH2O = 2 × 10−2 atm) air. All phases crystallized in a trigonal symmetry with P3m1 space group. The conductivity difference between undoped and calcium-doped samples is more than two orders of magnitude due to the appearance of oxygen vacancies during acceptor doping, which are responsible for a higher ionic conductivity. The La2Nd0.9Ca0.1ZnO5.45 sample shows the highest conductivity of about 10−3 S∙cm−1 at 650 °C. The Ca-doped phases are capable of reversible water uptake, confirming their proton-conducting nature. © 2023 by the authors.
Ministry of Education and Science of the Russian Federation, Minobrnauka The research funding from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program) is gratefully acknowledged. |
|
| Дата |
2024-04-05T16:22:50Z
2024-04-05T16:22:50Z 2023 |
|
| Тип |
Article
Journal article (info:eu-repo/semantics/article) |info:eu-repo/semantics/publishedVersion |
|
| Идентификатор |
Belova, K, Egorova, A, Pachina, S, Animitsa, I & Medvedev, D 2023, 'Oxygen-Ion and Proton Transport of Origin and Ca-Doped La2ZnNdO5.5 Materials', Inorganics, Том. 11, № 5, 196. https://doi.org/10.3390/inorganics11050196
Belova, K., Egorova, A., Pachina, S., Animitsa, I., & Medvedev, D. (2023). Oxygen-Ion and Proton Transport of Origin and Ca-Doped La2ZnNdO5.5 Materials. Inorganics, 11(5), [196]. https://doi.org/10.3390/inorganics11050196 2304-6740 Final All Open Access, Gold https://www.scopus.com/inward/record.uri?eid=2-s2.0-85160248644&doi=10.3390%2finorganics11050196&partnerID=40&md5=73c3fab89b6aae19f4f2d0709b218cde https://www.mdpi.com/2304-6740/11/5/196/pdf?version=1682927983 http://elar.urfu.ru/handle/10995/130505 10.3390/inorganics11050196 85160248644 001033220300001 |
|
| Язык |
en
|
|
| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
|
| Формат |
application/pdf
|
|
| Издатель |
MDPI
|
|
| Источник |
Inorganics
Inorganics |
|