Mixed ionic-electronic conductivity, phase stability and electrochemical activity of Gd-substituted La2NiO4+δ as oxygen electrode material for solid oxide fuel/electrolysis cells
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Mixed ionic-electronic conductivity, phase stability and electrochemical activity of Gd-substituted La2NiO4+δ as oxygen electrode material for solid oxide fuel/electrolysis cells
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| Автор |
Pikalova, E.
Kolchugin, A. Zakharchuk, K. Boiba, D. Tsvinkinberg, V. Filonova, E. Khrustov, A. Yaremchenko, A. |
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| Тематика |
IONIC CONDUCTIVITY
LANTHANUM NICKELATE OXYGEN ELECTRODE OXYGEN NONSTOICHIOMETRY POLARIZATION RESISTANCE SOLID OXIDE FUEL CELL CERIUM COMPOUNDS COPPER OXIDES ELECTROCHEMICAL ELECTRODES ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY GADOLINIUM COMPOUNDS IONIC CONDUCTION IN SOLIDS IONIC CONDUCTIVITY IRON COMPOUNDS NICKEL COMPOUNDS SOLID ELECTROLYTES SOLID OXIDE FUEL CELLS (SOFC) ELECTROCHEMICAL ACTIVITIES ELECTRODE MATERIAL ELECTROLYSIS CELL LANTHANUM NICKELATE OXIDE FUELS OXYGEN ELECTRODE OXYGEN NON-STOICHIOMETRY POLARIZATION RESISTANCES SOLID OXIDE SOLID-OXIDE FUEL CELL LANTHANUM COMPOUNDS |
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| Описание |
Ruddlesden-Popper La2-xGdxNiO4+δ (x = 0–0.4) nickelates were synthesized by glycerol-nitrate combustion technique and explored as potential oxygen electrode materials for solid oxide fuel/electrolysis cells. Similar to the parent La2NiO4+δ, the metastability of RP-type n = 1 structure limits the applicability of La2-xGdxNiO4+δ to temperatures below 900 °C. These solid solutions are mixed conductors with predominantly p-type electronic conductivity that exceeds 50 S/cm at 500–800 °C in air. Substitution by gadolinium does not change the overstoichiometric oxygen content in air but has a negative impact on the mobility of interstitial oxygen, most likely, due to steric effects associated with the lattice shrinkage on doping. The electrochemical activity of bilayer electrodes comprising functional La2-xGdxNiO4+δ and current collecting LaNi0.6Fe0.4O3-δ + 3 wt% CuO layers in contact with Ce0.8Gd0.2O1.9 electrolyte was studied in air at 550–850 °C. Analysis of electrochemical impedance spectroscopy data employing the ALS (Adler-Lane-Steele) model revealed the limiting role of oxygen-ionic conductivity of functional La2-xGdxNiO4+δ materials in overall electrode performance. © 2021 Hydrogen Energy Publications LLC
COMPETE2020 IHTE UB RAS Fundação para a Ciência e a Tecnologia, FCT Russian Foundation for Basic Research, РФФИ, (20-03-00151, POCI-01-0145-FEDER-032295) Ministério da Ciência, Tecnologia e Ensino Superior, MCTES, (SFRH/BD/138773/2018, UIDB/50011/2020, UIDP/50011/2020) Government Council on Grants, Russian Federation Synthesis of the materials, XRD, BET and SEM study were performed using the equipment of the Shared Access Centre Composition of Compounds, IHTE UB RAS, with the support from the Government of the Russian Federation, Agreement No. 02.A03.21.0006 (Act 211). The electrochemical studies were supported financially by the Russian Foundation for Basic Research (RFBR), grant No. 20-03-00151. K.Z., D.B. and A.Y. gratefully acknowledge financial support by the project CARBOSTEAM (POCI-01-0145-FEDER-032295) funded by FEDER through COMPETE2020 - Programa Operacional Competitividade e Internacionalização (POCI) and by national funds through FCT/MCTES , and by project CICECO - Aveiro Institute of Materials ( UIDB/50011/2020 & UIDP/50011/2020 ) financed by national funds through the FCT/MCTES and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement. K.Z. acknowledges PhD scholarship by the FCT ( SFRH/BD/138773/2018 ). |
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| Дата |
2024-04-22T15:53:34Z
2024-04-22T15:53:34Z 2021 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) info:eu-repo/semantics/submittedVersion |
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| Идентификатор |
Pikalova, E, Kolchugin, A, Zakharchuk, K, Boiba, D, Tsvinkinberg, V, Filonova, E, Khrustov, A & Yaremchenko, A 2021, 'Mixed ionic-electronic conductivity, phase stability and electrochemical activity of Gd-substituted La2NiO4+δ as oxygen electrode material for solid oxide fuel/electrolysis cells', International Journal of Hydrogen Energy, Том. 46, № 32, стр. 16932-16946. https://doi.org/10.1016/j.ijhydene.2021.03.007
Pikalova, E., Kolchugin, A., Zakharchuk, K., Boiba, D., Tsvinkinberg, V., Filonova, E., Khrustov, A., & Yaremchenko, A. (2021). Mixed ionic-electronic conductivity, phase stability and electrochemical activity of Gd-substituted La2NiO4+δ as oxygen electrode material for solid oxide fuel/electrolysis cells. International Journal of Hydrogen Energy, 46(32), 16932-16946. https://doi.org/10.1016/j.ijhydene.2021.03.007 0360-3199 Final All Open Access; Green Open Access https://ria.ua.pt/bitstream/10773/31790/1/IntJHydrogenEnergy_46_%282021%29_16932.pdf https://ria.ua.pt/bitstream/10773/31790/1/IntJHydrogenEnergy_46_%282021%29_16932.pdf http://elar.urfu.ru/handle/10995/132461 46762277 10.1016/j.ijhydene.2021.03.007 85103718842 644993100012 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by-nc-nd |
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| Формат |
application/pdf
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| Издатель |
Elsevier Ltd
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| Источник |
International Journal of Hydrogen Energy
International Journal of Hydrogen Energy |
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