Structure and Physical Properties of Ceramic Materials Based on ZrO2-Sc2O3 for SOFC Electrolytic Membranes Obtained from Powders of Melted Solid Solutions with a Similar Composition

Dmitrii Agarkov; Mikhail Borik; Ekaterina Buzaeva; Galina Korableva; Alexey Kulebyakin; Irina Kuritsyna; Nataliya Larina; Vladimir Kyashkin; Elena Lomonova; Filipp Milovich; Valentina Myzina; Polina Ryabochkina; Nataliya Tabachkova; Denis Zakharov

doi:10.3390/membranes13080717

Structure and Physical Properties of Ceramic Materials Based on ZrO₂-Sc₂O₃ for SOFC Electrolytic Membranes Obtained from Powders of Melted Solid Solutions with a Similar Composition

Membranes (Basel). 2023 Aug 1;13(8):717. doi: 10.3390/membranes13080717.

Authors

Dmitrii Agarkov^{1

2}, Mikhail Borik³, Ekaterina Buzaeva⁴, Galina Korableva¹, Alexey Kulebyakin³, Irina Kuritsyna¹, Nataliya Larina⁴, Vladimir Kyashkin⁴, Elena Lomonova³, Filipp Milovich^{5

6}, Valentina Myzina³, Polina Ryabochkina⁴, Nataliya Tabachkova^{3

6}, Denis Zakharov⁶

Affiliations

¹ Osipyan Institute of Solid State Physics RAS, Academician Osipyan Str., 2, 142432 Chernogolovka, Russia.
² Moscow Institute of Physics and Technology, Institusky Lane, 9, 141700 Doloprudny, Russia.
³ Prokhorov General Physics Institute of Russian Academy of Sciences, Vavilova Street, 38, 119991 Moscow, Russia.
⁴ Institute of High Technologies and New Materials, National Research Ogarev Mordovia State University, Bolshevistskaya Street, 68, 430005 Saransk, Russia.
⁵ Department of Materials Science, Moscow Polytechnic University, Bolshaya Semyonovskaya Street, 38, 107023 Moscow, Russia.
⁶ Department of Materials Science of Semiconductors and Dielectrics, National University of Science and Technology «MISIS», Leninskiy Prospect, 4, 119049 Moscow, Russia.

Abstract

This paper presents the results of studying the phase composition, luminescent characteristics, and ionic conductivity of ceramic scandium-stabilized solid solutions of zirconium dioxide containing 9 and 10 mol% Sc₂O₃. Ceramic samples were prepared by sintering powders obtained by grinding melted solid solutions of the same composition. A comparative analysis of the obtained data with similar characteristics of single crystals has been carried out. Differences in the phase composition of ceramics and initial single crystals were found. The effect of the structure and properties of grain boundaries on the ionic conductivity of ceramic samples is discussed. It is shown that the differences in the ionic conductivity of ceramic samples and crystals are mainly due to changes in the structure and phase composition.

Keywords: SOFC; conductivity; single crystal; structure; zirconia membranes.

Abstract

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