Sciact
  • EN
  • RU

Boosting the Oxygen Transport Kinetics and Functional Properties of La2NiO4+δ via Partial La-to-Sm Substitution Научная публикация

Журнал Journal of Alloys and Compounds
ISSN: 0925-8388 , E-ISSN: 1873-4669
Вых. Данные Год: 2024, Том: 980, Номер статьи : 173648, Страниц : 15 DOI: 10.1016/j.jallcom.2024.173648
Ключевые слова Solid oxide fuel cell; Cathode; Doped La2NiO4; Isotope exchange; Thermal expansion; Electrical conductivity; Polarization resistance
Авторы Pikalova E. 1,2 , Sadykov V. 3 , Tsvinkinberg V. 1 , Kolchugin A. 1 , Zhulanova T. 1,2 , Guseva E. 2 , Eremeev N. 3 , Sadovskaya E. 3 , Belyaev V. 3 , Filonova E. 2
Организации
1 Institute of High Temperature Electrochemistry UB RAS, Akademicheskaya st. 20, Yekaterinburg 620137, Russia
2 Ural Federal University, Mira st. 19, Yekaterinburg 620002, Russia
3 Federal Research Center Boreskov Institute of Catalysis SB RAS, Akad. Lavrentieva ave. 5, Novosibirsk 630090, Russia

Информация о финансировании (2)

1 Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) 075-03-2022-351 (122020100324-3) (FUME-2022-0006)
2 Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) FWUR-2024-0033

Реферат: Layered nickelates, as representatives of Ruddlesden-Popper phases, are widely used in electrochemical, catalytic and other applications due to their advanced transport and thermomechanical characteristics. In this work, La2–xSmxNiO4+δ (x = 0.0 – 1.0) complex oxides are obtained and then comprehensively studied as potential oxygen electrode materials for solid oxide fuel and electrolysis cells (SOFCs and SOECs). These materials are synthesized by a glycerol-nitrate combustion method. The obtained compounds are single-phase up to x = 0.8 and possess a tetragonal Ruddlesden-Popper structure (I4/mmm sp. gr.). A combination of complementary techniques, including reverse dichromatometric titration, thermogravimetric and isotope exchange methods has been used to demonstrate that partial Sm substitution results in an increase in the over-stoichiometric oxygen content in the materials and oxygen transport kinetics. These materials are found to be mixed ionic-electronic conductors with predominantly p-type electronic conductivity exceeding 110 S/cm at 450 °C in air. The Sm-containing nickelates exhibit improved thermomechanical compatibility and show no chemical interaction with CeO2-based solid electrolytes compared to the undoped La2NiO4+δ. The electrochemical activity of bilayer electrodes consisting of the La2–xSmxNiO4+δ functional layers and LaNi0.6Fe0.4O3–δ-based collectors are studied in air at 600 – 850 °C in the Ce0.8Sm0.2O1.9-based symmetrical cells. Electrochemical impedance spectroscopy study and following distribution of relaxation times analysis indicate a positive impact of the increased oxygen mobility in the La2–xSmxNiO4+δ materials on the overall electrode performance. Due to their superior electrode characteristics compared to La2NiO4+δ, La2–xSmxNiO4+δ with a moderate dopant content (x = 0.2 – 0.3) can be recommended for use as oxygen electrodes for both SOFCs and SOECs.
Библиографическая ссылка: Pikalova E. , Sadykov V. , Tsvinkinberg V. , Kolchugin A. , Zhulanova T. , Guseva E. , Eremeev N. , Sadovskaya E. , Belyaev V. , Filonova E.
Boosting the Oxygen Transport Kinetics and Functional Properties of La2NiO4+δ via Partial La-to-Sm Substitution
Journal of Alloys and Compounds. 2024. V.980. 173648 :1-15. DOI: 10.1016/j.jallcom.2024.173648 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
Поступила в редакцию: 24 окт. 2023 г.
Принята к публикации: 22 янв. 2024 г.
Опубликована online: 24 янв. 2024 г.
Опубликована в печати: 15 апр. 2024 г.
Идентификаторы БД:
Web of science: WOS:001173883400001
Scopus: 2-s2.0-85183455172
РИНЦ: 66136984
Chemical Abstracts: 2024:218662
OpenAlex: W4391188564
Цитирование в БД:
БД Цитирований
OpenAlex 2
Scopus 2
Web of science 2
РИНЦ 3
Альметрики: