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http://elar.urfu.ru/handle/10995/90766
Title: | Thermoelectric behavior of BaZr0.9Y0.1O3−d proton conducting electrolyte |
Authors: | Tsvetkov, D. Ivanov, I. Malyshkin, D. Sereda, V. Zuev, A. |
Issue Date: | 2019 |
Publisher: | MDPI AG |
Citation: | Thermoelectric behavior of BaZr0.9Y0.1O3−d proton conducting electrolyte / D. Tsvetkov, I. Ivanov, D. Malyshkin, V. Sereda, et al. . — DOI 10.3390/membranes9090120 // Membranes. — 2019. — Vol. 9. — Iss. 9. — 120. |
Abstract: | BaZr0.9Y0.1O3-δ (BZY10), a promising proton conducting material, exhibits p-type conduction under oxidative conditions. Holes in BZY10 are of the small polaron type. However, there is no clear understanding at which places in the lattice they are localized. The main objectives of this work were, therefore, to discuss the nature of electronic defects in BZY10 on the basis of the combined measurements of the thermo-EMF and conductivity. Total electrical conductivity and Seebeck coefficient of BZY10 were simultaneously studied depending on partial pressures of oxygen (pO2), water (pH2O) and temperature (T). The model equation for total conductivity and Seebeck coefficient derived on the basis of the proposed defect chemical approach was successfully fitted to the experimental data. Transference numbers of all the charge carriers in BZY10 were calculated. The heat of transport of oxide ions was found to be about one half the activation energy of their mobility, while that of protons was almost equal to the activation energy of their mobility. The results of the Seebeck coefficient modeling indicate that cation impurities, rather than oxygen sites, should be considered as a place of hole localization. © 2019 by the authors. Licensee MDPI, Basel, Switzerland. |
Keywords: | BAZR0.9Y0.1O2.95 CONDUCTIVITY HYDRATION PROTON CONDUCTOR SEEBECK COEFFICIENT BARIUM COMPOUNDS DEFECTS ELECTRIC CONDUCTIVITY ELECTROLYTES HYDRATION OXYGEN SEEBECK COEFFICIENT THERMOELECTRICITY ZIRCONIUM COMPOUNDS BAZR0.9Y0.1O2.95 COMBINED MEASUREMENTS ELECTRICAL CONDUCTIVITY OXIDATIVE CONDITIONS PROTON CONDUCTING MATERIALS PROTON CONDUCTORS PROTON-CONDUCTING ELECTROLYTE TRANSFERENCE NUMBER ACTIVATION ENERGY |
URI: | http://elar.urfu.ru/handle/10995/90766 |
Access: | info:eu-repo/semantics/openAccess cc-by |
SCOPUS ID: | 85081006429 |
WOS ID: | 000487746100006 |
PURE ID: | 11134311 |
ISSN: | 2077-0375 |
DOI: | 10.3390/membranes9090120 |
metadata.dc.description.sponsorship: | Russian Science Foundation, RSF: 18-73-00022 Funding: This work was supported by the Russian Science Foundation (project No. 18-73-00022) |
RSCF project card: | 18-73-00022 |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
Files in This Item:
File | Description | Size | Format | |
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10.3390-membranes9090120.pdf | 4,01 MB | Adobe PDF | View/Open |
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