Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Ionic (O2−, H+) transport in novel Zn-doped perovskite LaInO3
AU - Egorova, Anastasia V.
AU - Belova, Ksenia G.
AU - Animitsa, Irina E.
PY - 2023
Y1 - 2023
N2 - For the first time the LaIn1-xZnxO3-1/2x samples was synthesized via solid-state reaction method. The Zn2+−doping effect on the B-site of LaInO3 on structure, water uptake and electrical properties was investigated. The results show that Zn2+ is good alternative to alkaline earth metals. The Zn-doping decreases the sintered temperature and makes it possible to obtain high-density ceramics. The substitution increases the conductivity by ∼2 orders of magnitude. Below ∼500 °C the phases exhibit the dominant oxygen-ionic transport (dry atmosphere), and the dominant protonic transport below 600 °C (wet atmosphere). The obtained results suggest the prospects for using these materials in the Hydrogen Energy field. A new concept of the ability of perovskite phases LaBO3 to incorporate water has been proposed. In addition to the presence of oxygen vacancies, their size, which depends on the B-cation nature, is of decisive importance in the hydration process and the formation of proton conductivity. © 2023 Hydrogen Energy Publications LLC.
AB - For the first time the LaIn1-xZnxO3-1/2x samples was synthesized via solid-state reaction method. The Zn2+−doping effect on the B-site of LaInO3 on structure, water uptake and electrical properties was investigated. The results show that Zn2+ is good alternative to alkaline earth metals. The Zn-doping decreases the sintered temperature and makes it possible to obtain high-density ceramics. The substitution increases the conductivity by ∼2 orders of magnitude. Below ∼500 °C the phases exhibit the dominant oxygen-ionic transport (dry atmosphere), and the dominant protonic transport below 600 °C (wet atmosphere). The obtained results suggest the prospects for using these materials in the Hydrogen Energy field. A new concept of the ability of perovskite phases LaBO3 to incorporate water has been proposed. In addition to the presence of oxygen vacancies, their size, which depends on the B-cation nature, is of decisive importance in the hydration process and the formation of proton conductivity. © 2023 Hydrogen Energy Publications LLC.
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U2 - 10.1016/j.ijhydene.2023.03.263
DO - 10.1016/j.ijhydene.2023.03.263
M3 - Article
VL - 48
SP - 22685
EP - 22697
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 59
ER -
ID: 40601165