Transport Properties of Ca-Doped Ln2NiO4 | Sciact - CRIS-system of Boreskov Institute of Catalysis

Transport Properties of Ca-Doped Ln2NiO4 Full article

Conference

10th International Conference on Sustainable Energy & Environmental Protection
27-30 Jun 2017 , Bled

Source

10th International Conference on Sustainable Energy and Environmental Protection (June 27th – 30th, 2017, Bled, Slovenia): Hydrogen and Fuel Cells
Compilation, University of Maribor Press. Maribor, Slovenia.2017. 254 c. ISBN 9789612860547.

Output data

Year: 2017, Pages: 87-96 Pages count : 10 DOI: 10.18690/978-961-286-054-7.8

Tags

doped Ln2NiO4+δ; layered structures; electrical conductivity; ionic diffusion; isotope exchange

Authors

Sadykov Vladislav A. ^1,2 , Pikalova Elena Yu. ³ , Kolchugin Alexander A. ³ , Eremeev Nikita F. ¹ , Bogdanovich Nina M. ³ , Khasanov Azat F. ⁴ , Skriabin Pavel I. ¹ , Krasnov Alexey V. ¹ , Sadovskaya Ekaterina M. ^1,2 , Shmakov Alexander N. ^1,2,5 , Vinokurov Zakhar S. ^1,5 , Ishchenko Arcady V. ^1,2 , Pikalov Sergey M. ⁶ , Filonova Elena A. ⁴

Affiliations

1	Boreskov Institute of Catalysis SB RAS, pr. Akad. Lavrentieva 5, Novosibirsk 630090, Russia
2	Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia
3	Institute of High Temperature Electrochemistry UB RAS, Akademicheskaya str. 20, Yekaterinburg 620137, Russia
4	Ural Federal University, Mira str. 19, Yekaterinburg 620002, Russia
5	Budker Institute of Nuclear Physics SB RAS, pr. Akad. Lavrentieva 11, Novosibirsk 630090, Russia
6	Institute of Metallurgy, UB RAS, Amundsena str. 101, Yekaterinburg 620137, Russia

Funding (2)

1	Russian Science Foundation	16-13-00112
2	The Ministry of Education and Science of the Russian Federation	02.A03.21.0006

Ln2NiO4 oxides with Ruddlesden-Popper structure having a high mixed ionic-electronic conductivity are important materials in developing oxygen separation membranes and cathodes of intermediate temperature solid oxide fuel cells. This work presents results of studies the structure, oxygen mobility and surface reactivity of Ca-doped Ln2NiO4. Ln2-xCaxNiO4 oxides (Ln = La, Pr, Nd; x = 0, 0.3) prepared by the co-precipitation method were characterized by XRD and TEM. The oxygen mobility and surface reactivity were studied by the temperature programmed isotope exchange of oxygen with C18O2 and unit cell volume relaxation. Although doping results in enhanced electrical conductivity the overall oxygen mobility declines due to decreasing the content of highly mobile interstitial oxygen and hampering cooperative mechanism of oxygen migration. This results in the emergence of additional 1-2 channels of slow oxygen diffusion at a high dopant content related to transport in perovskite layers and via the interlayer positions near the dopant cation sites.

Sadykov V.A. , Pikalova E.Y. , Kolchugin A.A. , Eremeev N.F. , Bogdanovich N.M. , Khasanov A.F. , Skriabin P.I. , Krasnov A.V. , Sadovskaya E.M. , Shmakov A.N. , Vinokurov Z.S. , Ishchenko A.V. , Pikalov S.M. , Filonova E.A.
Transport Properties of Ca-Doped Ln2NiO4
In compilation 10th International Conference on Sustainable Energy and Environmental Protection (June 27th – 30th, 2017, Bled, Slovenia): Hydrogen and Fuel Cells. – University of Maribor Press., 2017. – C.87-96. – ISBN 9789612860547. DOI: 10.18690/978-961-286-054-7.8 OpenAlex

Full text from publisher

Published online:

Jul 6, 2017

OpenAlex:

W2734906335

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OpenAlex	21