Tailoring the Structural, Thermal and Transport Properties of Pr2NiO4+δ Through Ca-Doping Strategy | Sciact - CRIS-system of Boreskov Institute of Catalysis

Tailoring the Structural, Thermal and Transport Properties of Pr2NiO4+δ Through Ca-Doping Strategy Full article

Conference

European-Materials-Research-Society (EMRS) Spring Meeting / Sympsium A on Thin Film Chalcogenide Photovoltaic Materials
18-22 Jun 2018 , Strasbourg

Journal

Solid State Ionics
ISSN: 0167-2738

Output data

Year: 2019, Volume: 333, Pages: 30-37 Pages count : 8 DOI: 10.1016/j.ssi.2019.01.014

Tags

Pr2-xCaxNiO4; in situ synchrotron XRD; Thermal expansion coefficient; Ionic conductivity

Authors

Sadykov V.A. ^1,2 , Pikalova E.Yu. ^3,4 , Vinokurov Z.S. ^1,2,5 , Shmakov A.N. ^1,2,5 , Eremeev N.F. ¹ , Sadovskaya E.M. ^1,2 , Lyagaeva J.G. ^3,4 , Medvedev D.A. ^3,4 , Belyaev V.D. ¹

Affiliations

1	Boreskov Institute of Catalysis SB RAS, 5 Akad. Lavrentieva av., Novosibirsk 630090, Russia
2	Novosibirsk State University, 2 Pirogova st., Novosibirsk 630090, Russia
3	Institute of High Temperature Electrochemistry UB RAS, 20 Akademicheskaya st., Yekaterinburg 620137, Russia
4	Ural Federal University, 19 Mira st., Yekaterinburg 620002, Russia
5	Budker Institute of Nuclear Physics SB RAS, pr. Akad. Lavrentieva 11, Novosibirsk 630090, Russia

Funding (4)

1	Russian Science Foundation	16-13-00112
2	Federal Agency for Scientific Organizations	0303-2016-0013
3	The Ministry of Education and Science of the Russian Federation	02.A03.21.0006
4	Russian Foundation for Basic Research	18-38-20063 (АААА-А18-118102390007-8)

Materials with a layered Ruddlesden–Popper structure having high oxygen mobility are promising for SOFC cathodes and oxygen separation membranes. This work aims at studying structural and transport features of Pr2-xCaxNiO4+δ (x = 0–0.6) oxides synthesized by a modified co-precipitation method and sintered at 1250 °C. The samples were characterized by in situ XRD using synchrotron radiation, TGA, oxygen heteroexchange with C18O2 and dc four-probe method. The phase transitions Fmmm ↔ I4/mmm were observed for all samples caused both by the temperature increase and oxygen loss. The electronic conductivity increases with Ca doping, while ionic conductivity varies in a complex manner remaining rather high (~10−3–10−1 S/cm), thus ensuring high values of ambipolar conductivity attractive for the practical application. The best ambipolar conductivity values at high temperatures were demonstrated for the undoped sample as well as for those with a low (x = 0.1) or high (x = 0.3; 0.5) dopant content. The relationships between structural, thermomechanical and transport properties are discussed.

Sadykov V.A. , Pikalova E.Y. , Vinokurov Z.S. , Shmakov A.N. , Eremeev N.F. , Sadovskaya E.M. , Lyagaeva J.G. , Medvedev D.A. , Belyaev V.D.
Tailoring the Structural, Thermal and Transport Properties of Pr2NiO4+δ Through Ca-Doping Strategy
Solid State Ionics. 2019. V.333. P.30-37. DOI: 10.1016/j.ssi.2019.01.014 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jul 14, 2018
Accepted:	Jan 10, 2019
Published online:	Jan 22, 2019
Published print:	May 1, 2019

Web of science:	WOS:000464300700005
Scopus:	2-s2.0-85060218494
Elibrary:	38681436
Chemical Abstracts:	2019:174565
OpenAlex:	W2914255830

DB	Citing
Scopus	16
Web of science	16
Elibrary	17
OpenAlex	16