Structural, Surface and Oxygen Transport Properties of Sm-Doped Nd Nickelates | Sciact - CRIS-system of Boreskov Institute of Catalysis

Structural, Surface and Oxygen Transport Properties of Sm-Doped Nd Nickelates Full article

Journal

Solid State Ionics
ISSN: 0167-2738

Output data

Year: 2024, Volume: 412, Article number : 116596, Pages count : 8 DOI: 10.1016/j.ssi.2024.116596

Tags

Solid oxide fuel cells; Cathodes; Ruddlesden – Popper phases; Nd nickelates; Radiation thermal sintering; electron beams; Isotope heteroexchange; Oxygen diffusion

Authors

Sadykov V.A. ¹ , Sadovskaya E.M. ¹ , Bespalko Yu.N. ¹ , Smal' E.A. ¹ , Eremeev N.F. ¹ , Prosvirin I.P. ¹ , Bulavchenko O.A. ¹ , Mikhailenko M.A. ² , Korobeynikov M.V. ³

Affiliations

1	Federal research center Boreskov Institute of Catalysis SB RAS, Akad. Lavrentieva ave. 5, 630090 Novosibirsk, Russia
2	Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze str. 18, 630128 Novosibirsk, Russia
3	Budker Institute of Nuclear Physics SB RAS, Akad. Lavrentieva ave. 11, 630090 Novosibirsk, Russia

Funding (1)

Russian Science Foundation

23-73-00045

Ruddlesden – Popper phases are promising materials for solid oxide fuel cell/electrolyzer air electrodes, oxygen separation membranes and other electrochemical devices due to their high oxygen mobility provided by a cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial oxygen. This work aims at studying structural, surface and oxygen transport properties of Sm-doped Nd nickelates sintered in a furnace at the temperatures in the range of 800–1250 °C and using electron beams at the temperatures in the range of 1150–1250 °C. Nd2-xSmxNiO4+δ, x = 0.2 and 0.4 are synthesized by a modified Pechini technique and characterized by X-ray diffraction, X-ray photoelectron spectroscopy and temperature-programmed isotope exchange of oxygen with C18O2 in a flow reactor. The phase composition studies show the ability to obtain single-phase materials at certain sintering conditions. Nd/Sm ratio on the surface is close to stoichiometric one, while (Nd + Sm)/Ni ratio on the surface is below stoichiometric. Such materials possess a high oxygen mobility (D* up to ∼10−7 cm2/s at 700 °C).

Sadykov V.A. , Sadovskaya E.M. , Bespalko Y.N. , Smal' E.A. , Eremeev N.F. , Prosvirin I.P. , Bulavchenko O.A. , Mikhailenko M.A. , Korobeynikov M.V.
Structural, Surface and Oxygen Transport Properties of Sm-Doped Nd Nickelates
Solid State Ionics. 2024. V.412. 116596 :1-8. DOI: 10.1016/j.ssi.2024.116596 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Apr 3, 2024
Accepted:	May 14, 2024
Published online:	May 17, 2024
Published print:	Sep 1, 2024

Web of science:	WOS:001244532300001
Scopus:	2-s2.0-85193434429
Elibrary:	67683337
Chemical Abstracts:	2024:1137063
OpenAlex:	W4396989279

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