Research output: Contribution to journal › Article › peer-review
Thermal and chemical expansion behavior of hydrated barium stannate materials. / Zvonareva, Inna; Starostin, George; Akopian, Mariam; Мурашкина, Анна Андреевна; Fu, Xian-Zhu; Medvedev, Dmitry.
In: Ceramics International, Vol. 49, No. 13, 01.07.2023, p. 21923-21931.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Thermal and chemical expansion behavior of hydrated barium stannate materials
AU - Zvonareva, Inna
AU - Starostin, George
AU - Akopian, Mariam
AU - Мурашкина, Анна Андреевна
AU - Fu, Xian-Zhu
AU - Medvedev, Dmitry
PY - 2023/7/1
Y1 - 2023/7/1
N2 - BaSnO3 is a relatively new family of proton-conducting materials, which are attractive for high-temperature applications, including protonic ceramic fuel cells and protonic ceramic electrolysis cells. In this work, we synthesized the BaSn1–xYxO3–δ (0 ≤ x ≤ 0.4) phases and provided their in-depth characterization utilizing high-temperature X-ray diffraction and dilatometry techniques to reveal the fundamental regularities in the variations of chemical and thermal strains depending on composition. It is found that chemical expansion/contraction effects become to be more important with increasing the Y-content. In particular, the weakly doped stannates exhibit predominantly thermal expansion, while the heavily doped stannates (especially, x = 0.4) display a notable chemical contribution. The mentioned effects are discussed in terms of the BaSn1–xYxO3–δ defect structure and its ability towards hydration and dehydration. This work therefore provides valuable data for the real application of the studied materials (in both powder and ceramic forms) as well as other pronounced proton-conducting electrolytes.
AB - BaSnO3 is a relatively new family of proton-conducting materials, which are attractive for high-temperature applications, including protonic ceramic fuel cells and protonic ceramic electrolysis cells. In this work, we synthesized the BaSn1–xYxO3–δ (0 ≤ x ≤ 0.4) phases and provided their in-depth characterization utilizing high-temperature X-ray diffraction and dilatometry techniques to reveal the fundamental regularities in the variations of chemical and thermal strains depending on composition. It is found that chemical expansion/contraction effects become to be more important with increasing the Y-content. In particular, the weakly doped stannates exhibit predominantly thermal expansion, while the heavily doped stannates (especially, x = 0.4) display a notable chemical contribution. The mentioned effects are discussed in terms of the BaSn1–xYxO3–δ defect structure and its ability towards hydration and dehydration. This work therefore provides valuable data for the real application of the studied materials (in both powder and ceramic forms) as well as other pronounced proton-conducting electrolytes.
KW - BaSnO3
KW - Chemical strain
KW - Hydration
KW - Perovskite
KW - Proton transfer
KW - Thermal expansion
UR - https://www.mendeley.com/catalogue/e7f10d5d-8325-3417-8198-759fbf1b29ff/
U2 - 10.1016/j.ceramint.2023.04.016
DO - 10.1016/j.ceramint.2023.04.016
M3 - Article
VL - 49
SP - 21923
EP - 21931
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 13
ER -
ID: 104068989