Correlation Between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance | Sciact - CRIS-system of Boreskov Institute of Catalysis

Correlation Between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance Full article

Journal

Crystals
, E-ISSN: 2073-4352

Output data

Year: 2021, Volume: 11, Number: 3, Article number : 297, Pages count : 21 DOI: 10.3390/cryst11030297

Tags

La2NiO4+δ; Ca doping; isotope exchange; synchrotron radiation studies; oxygen mobility; polarization resistance

Authors

Pikalova Elena ^1,2 , Sadykov Vladislav ^3,4 , Sadovskaya Ekaterina ³ , Yeremeev Nikita ³ , Kolchugin Alexander ¹ , Shmakov Alexander ^3,5,6 , Vinokurov Zakhar ^3,5,6 , Mishchenko Denis ^3,4 , Filonova Elena ⁷ , Belyaev Vladimir ³

Affiliations

1	Institute of High Temperature Electrochemistry UB RAS, 620066 Yekaterinburg, Russia
2	Department of Environmental Economics, Graduate School of Economics and Management, Ural Federal University Named after the First President of Russia B.N. Yeltsin, 620002 Ekaterinburg, Russia
3	Federal Research Center Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia
4	Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russia
5	Budker Institute of Nuclear Physics SB RAS, 630090 Novosibirsk, Russia
6	Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
7	Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University Named after the First President of Russia B.N. Yeltsin, 620002 Ekaterinburg, Russia

Funding (4)

1	Ministry of Science and Higher Education of the Russian Federation	0239-2021-0005
2	Ministry of Science and Higher Education of the Russian Federation	0239-2021-0011
3	Ministry of Science and Higher Education of the Russian Federation	05.621.21.0022 (RFMEFI62119X0022) (АААА-А20-120072290017-9)
4	Ministry of Science and Higher Education of the Russian Federation

This work presents the results from a study of the structure and transport properties of Ca-doped La2NiO4+δ. La2−xCaxNiO4+δ (x = 0–0.4) materials that were synthesized via combustion of organic-nitrate precursors and characterized by X-ray diffraction (XRD), in situ XRD using synchrotron radiation, thermogravimetric analysis (TGA) and isotope exchange of oxygen with C18O2. The structure was defined as orthorhombic (Fmmm) for x = 0 and tetragonal (I4/mmm) for x = 0.1–0.4. Changes that occurred in the unit cell parameters and volume as the temperature changed during heating were shown to be caused by the excess oxygen loss. Typical for Ruddlesden–Popper phases, oxygen mobility and surface reactivity decreased as the Ca content was increased due to a reduction in the over-stoichiometric oxygen content with the exception of x = 0.1. This composition demonstrated its superior oxygen transport properties compared to La2NiO4+δ due to the enhanced oxygen mobility caused by structural features. Electrochemical data obtained showed relatively low polarization resistance for the electrodes with a low Ca content, which correlates well with oxygen transport properties.

Pikalova E. , Sadykov V. , Sadovskaya E. , Yeremeev N. , Kolchugin A. , Shmakov A. , Vinokurov Z. , Mishchenko D. , Filonova E. , Belyaev V.
Correlation Between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance

Crystals. 2021. V.11. N3. 297 :1-21. DOI: 10.3390/cryst11030297 WOS Scopus РИНЦ ANCAN OpenAlex

Full text from publisher

Submitted:	Feb 27, 2021
Accepted:	Mar 15, 2021
Published print:	Mar 17, 2021
Published online:	Mar 17, 2021

Web of science:	WOS:000633585400001
Scopus:	2-s2.0-85103574232
Elibrary:	46761730
Chemical Abstracts:	2021:805636
Chemical Abstracts (print):	174:884296
OpenAlex:	W3136459943

DB	Citing
Scopus	13
Web of science	12
Elibrary	14
OpenAlex	15