Unusual Lattice Parameters Behavior for La1.9Ca0.1NiO4+δ at the Temperatures below Oxygen Loss | Sciact - CRIS-система Института катализа

Unusual Lattice Parameters Behavior for La1.9Ca0.1NiO4+δ at the Temperatures below Oxygen Loss Научная публикация

Журнал

Crystals
, E-ISSN: 2073-4352

Вых. Данные

Год: 2022, Том: 12, Номер: 3, Номер статьи : 344, Страниц : 14 DOI: 10.3390/cryst12030344

Ключевые слова

anisotropic XRD peak broadening; HRTEM; (La,Ca)NiO4; IT-SOFC; lanthanum nickelates

Авторы

Mishchenko Denis ¹ , Vinokurov Zakhar ¹ , Gerasimov Evgeny ² , Filonova Elena ³ , Shmakov Alexander ¹ , Pikalova Elena ^4,5

Организации

1	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis, SB RAS, 630559 Novosibirsk, Russia
2	Federal Research Center Boreskov Institute of Catalysis, SB RAS, 630090 Novosibirsk, Russia
3	Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, 620002 Yekaterinburg, Russia
4	Laboratory of Solid Oxide Fuel Cells, Institute of High Temperature Electrochemistry, UB RAS, 620137 Yekaterinburg, Russia
5	Department of Environmental Economics, Institute of Economics and Management, Ural Federal University, 620002 Yekaterinburg, Russia

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)

ГЗ-2021-2023

In this work, we studied the structural features of La1.9Ca0.1NiO4.11, which is considered a promising cathode material for intermediate temperature solid-oxide fuel cells (IT-SOFC). The effect of different pretreatments on the structural characteristics of the sample was studied using X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) in order to elucidate the origin of a peculiar change of lattice parameters observed earlier during in situ XRD studies. The XRD studies have shown that anisotropic broadening for reflections with a high Miller index l appears after tempering of a quenched (from 1100 °C) sample at 250 °C. This temperature is too low for the release/incorporation of oxygen into the structure but is sufficient for oxygen migration inside the structure. The HRTEM assisted us in revealing differences in the defect structure after different pretreatments. Based on obtained results, the following possible explanation was proposed. Observed additional microstrains and non-oriented planar defects as well as a decrease in the coherent scattering region size in the [00l] direction are caused by the non-homogeneous redistribution of interstitial oxygen in the structure during tempering.

Mishchenko D. , Vinokurov Z. , Gerasimov E. , Filonova E. , Shmakov A. , Pikalova E.
Unusual Lattice Parameters Behavior for La1.9Ca0.1NiO4+δ at the Temperatures below Oxygen Loss
Crystals. 2022. V.12. N3. 344 :1-14. DOI: 10.3390/cryst12030344 WOS Scopus РИНЦ CAPlusCA OpenAlex СКИФ ID

Поступила в редакцию:	8 февр. 2022 г.
Принята к публикации:	28 февр. 2022 г.
Опубликована в печати:	2 мар. 2022 г.
Опубликована online:	2 мар. 2022 г.

Web of science:	WOS:000776868000001
Scopus:	2-s2.0-85125879699
РИНЦ:	48189235
Chemical Abstracts:	2022:870715
Chemical Abstracts (print):	178:293207
OpenAlex:	W4214890895
СКИФ ID:	1475

БД	Цитирований
Scopus	5
Web of science	4
РИНЦ	6
OpenAlex	5