Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice
The Ba3InGa2O7.5 complex oxide, possessing the perovskite-related structure with structural oxygen vacancies, was first synthesized by the solid state method. The phase was found to be characterized by monoclinic symmetry (sp. gr. P2/c) with the following unit cell parameters: a = 7.942(1) Å, b = 5....
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Ural Federal University
2024-01-01
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| Series: | Chimica Techno Acta |
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| Online Access: | https://chimicatechnoacta.ru/article/view/7311 |
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| author | Nadezhda Kochetova Veronika Cherepanova Alyona Pikalova Artem Gilev |
| author_facet | Nadezhda Kochetova Veronika Cherepanova Alyona Pikalova Artem Gilev |
| author_sort | Nadezhda Kochetova |
| collection | DOAJ |
| description | The Ba3InGa2O7.5 complex oxide, possessing the perovskite-related structure with structural oxygen vacancies, was first synthesized by the solid state method. The phase was found to be characterized by monoclinic symmetry (sp. gr. P2/c) with the following unit cell parameters: a = 7.942(1) Å, b = 5.868(5) Å, c = 18.201(6) Å, b = 91.52(9). Comprehensive investigations of electrical properties were carried out; ceramic material based on the complex oxide was shown to be a predominantly ionic conductor in the temperature range 450–900 oC. The conductivity is due to oxygen-ion transfer in dry conditions and oxygen-ion and proton transfer in wet atmosphere. The proton conductivity value is 4.5·10–5 S/cm, and the proton transport number is ~50% at 700 oC in wet air; at lower temperatures, proton transport becomes dominant. Prolonged treatment of the sample in water vapors below 450 oC leads to hydrolysis decomposition. |
| format | Article |
| id | doaj-art-4e606418d66c40cdb20d4c2ee519e071 |
| institution | OA Journals |
| issn | 2411-1414 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Ural Federal University |
| record_format | Article |
| series | Chimica Techno Acta |
| spelling | doaj-art-4e606418d66c40cdb20d4c2ee519e0712025-08-20T01:56:57ZengUral Federal UniversityChimica Techno Acta2411-14142024-01-0111110.15826/chimtech.2024.11.1.025168Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublatticeNadezhda Kochetova0Veronika Cherepanova1Alyona Pikalova2Artem Gilev3Ural Federal UniversityUral Federal UniversityUral Federal UniversityUral Federal UniversityThe Ba3InGa2O7.5 complex oxide, possessing the perovskite-related structure with structural oxygen vacancies, was first synthesized by the solid state method. The phase was found to be characterized by monoclinic symmetry (sp. gr. P2/c) with the following unit cell parameters: a = 7.942(1) Å, b = 5.868(5) Å, c = 18.201(6) Å, b = 91.52(9). Comprehensive investigations of electrical properties were carried out; ceramic material based on the complex oxide was shown to be a predominantly ionic conductor in the temperature range 450–900 oC. The conductivity is due to oxygen-ion transfer in dry conditions and oxygen-ion and proton transfer in wet atmosphere. The proton conductivity value is 4.5·10–5 S/cm, and the proton transport number is ~50% at 700 oC in wet air; at lower temperatures, proton transport becomes dominant. Prolonged treatment of the sample in water vapors below 450 oC leads to hydrolysis decomposition.https://chimicatechnoacta.ru/article/view/7311complex oxideperovskite-like structurestructural oxygen vacanciessolid electrolyteoxygen-ion conductivityproton conductivity |
| spellingShingle | Nadezhda Kochetova Veronika Cherepanova Alyona Pikalova Artem Gilev Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice Chimica Techno Acta complex oxide perovskite-like structure structural oxygen vacancies solid electrolyte oxygen-ion conductivity proton conductivity |
| title | Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice |
| title_full | Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice |
| title_fullStr | Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice |
| title_full_unstemmed | Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice |
| title_short | Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice |
| title_sort | oxygen ion and proton conductivity in the ba3inga2o7 5 complex oxide with incomplete oxygen sublattice |
| topic | complex oxide perovskite-like structure structural oxygen vacancies solid electrolyte oxygen-ion conductivity proton conductivity |
| url | https://chimicatechnoacta.ru/article/view/7311 |
| work_keys_str_mv | AT nadezhdakochetova oxygenionandprotonconductivityintheba3inga2o75complexoxidewithincompleteoxygensublattice AT veronikacherepanova oxygenionandprotonconductivityintheba3inga2o75complexoxidewithincompleteoxygensublattice AT alyonapikalova oxygenionandprotonconductivityintheba3inga2o75complexoxidewithincompleteoxygensublattice AT artemgilev oxygenionandprotonconductivityintheba3inga2o75complexoxidewithincompleteoxygensublattice |