Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice

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Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice. / Kochetova, Nadezhda ; Cherepanova, Veronika ; Pikalova, Alyona et al.
In: Chimica Techno Acta, Vol. 11, No. 1, 202411102, 2024.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{e4afce283a6645a6801febaf365d367e,

title = "Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice",

abstract = "The Ba3InGa2O7.5 complex oxide, possessing the perovskite-related struc-Ture with structural oxygen vacancies, was first synthesized by the solid state method. The phase was found to be characterized by monoclinic sym-metry (sp. gr. P2/c) with the following unit cell parameters: A = 7.942(1) A, b = 5.868(5) A, c = 18.201(6) A, = 91.52(9). Comprehen-sive investigations of electrical properties were carried out; ceramic ma-Terial 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 tempera-Tures, proton transport becomes dominant. Prolonged treatment of the sam-ple in water vapors below 450 oC leads to hydrolysis decomposition.",

author = "Nadezhda Kochetova and Veronika Cherepanova and Alyona Pikalova and Artem Gilev",

note = "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.",

year = "2024",

doi = "10.15826/chimtech.2024.11.1.02",

language = "English",

volume = "11",

journal = "Chimica Techno Acta",

issn = "2409-5613",

publisher = "Издательство Уральского университета",

number = "1",

}

RIS

TY - JOUR

T1 - Oxygen-ion and proton conductivity in the Ba3InGa2O7.5 complex oxide with incomplete oxygen sublattice

AU - Kochetova, Nadezhda

AU - Cherepanova, Veronika

AU - Pikalova, Alyona

AU - Gilev, Artem

N1 - 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.

PY - 2024

Y1 - 2024

N2 - The Ba3InGa2O7.5 complex oxide, possessing the perovskite-related struc-Ture with structural oxygen vacancies, was first synthesized by the solid state method. The phase was found to be characterized by monoclinic sym-metry (sp. gr. P2/c) with the following unit cell parameters: A = 7.942(1) A, b = 5.868(5) A, c = 18.201(6) A, = 91.52(9). Comprehen-sive investigations of electrical properties were carried out; ceramic ma-Terial 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 tempera-Tures, proton transport becomes dominant. Prolonged treatment of the sam-ple in water vapors below 450 oC leads to hydrolysis decomposition.

AB - The Ba3InGa2O7.5 complex oxide, possessing the perovskite-related struc-Ture with structural oxygen vacancies, was first synthesized by the solid state method. The phase was found to be characterized by monoclinic sym-metry (sp. gr. P2/c) with the following unit cell parameters: A = 7.942(1) A, b = 5.868(5) A, c = 18.201(6) A, = 91.52(9). Comprehen-sive investigations of electrical properties were carried out; ceramic ma-Terial 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 tempera-Tures, proton transport becomes dominant. Prolonged treatment of the sam-ple in water vapors below 450 oC leads to hydrolysis decomposition.

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85189350642

UR - https://www.elibrary.ru/item.asp?id=65118501

U2 - 10.15826/chimtech.2024.11.1.02

DO - 10.15826/chimtech.2024.11.1.02

M3 - Article

VL - 11

JO - Chimica Techno Acta

JF - Chimica Techno Acta

SN - 2409-5613

IS - 1

M1 - 202411102

ER -

ID: 55357259