SYNTHESIS AND CHARACTERIZATION OF (Ba1-хSrx)7Nb4MoO20 POWDERS FOR PROTON-CONDUCTING SOLID OXIDE FUEL CELLS

SYNTHESIS AND CHARACTERIZATION OF (Ba1-хSrx)7Nb4MoO20 POWDERS FOR PROTON-CONDUCTING SOLID OXIDE FUEL CELLS

This work reports on the preparation and characterization of Sr2+-doped Ba7Nb4MoO20 powders prepared by a solid-state synthesis as promising materials for solid oxide fuel cells. The influence of synthesis parameters and strontium content (x = 0; 0.05; 0.10; 0.15; 0.20) on the phase composition and...

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Date:2022
Main Authors: Bezdorozhev, Oleksii, Solodkyi, Ievgen, Ostroverkh, Anna, Morozov, Igor, Ostroverkh, Yevhenii, Solonin, Yuriy
Format: Article
Language:English
Published: V.I.Vernadsky Institute of General and Inorganic Chemistry 2022
Online Access:https://ucj.org.ua/index.php/journal/article/view/433
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Journal Title:Ukrainian Chemistry Journal

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Ukrainian Chemistry Journal
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spelling oai:ojs2.1444248.nisspano.web.hosting-test.net:article-4332022-07-06T15:59:08Z SYNTHESIS AND CHARACTERIZATION OF (Ba1-хSrx)7Nb4MoO20 POWDERS FOR PROTON-CONDUCTING SOLID OXIDE FUEL CELLS Bezdorozhev, Oleksii Solodkyi, Ievgen Ostroverkh, Anna Morozov, Igor Ostroverkh, Yevhenii Solonin, Yuriy solid-state synthesis, perovskite, Ba7Nb4MoO20, powder, electrolyte. This work reports on the preparation and characterization of Sr2+-doped Ba7Nb4MoO20 powders prepared by a solid-state synthesis as promising materials for solid oxide fuel cells. The influence of synthesis parameters and strontium content (x = 0; 0.05; 0.10; 0.15; 0.20) on the phase composition and properties of (Ba1-xSrx)7Nb4MoO20 powders was studied. The results of the phase analysis show that (Ba1-xSrx)7Nb4MoO20 (x = 0; 0.05; 0.10) powders with a minimum amount of secondary phases can be obtained after at least three repeated synthesis cycles at 1060–1080 оС for 10 h. According to the laser diffraction analysis, the synthesized powders comprise particles with a polydisperse size distribution spreading from 0.05 μm to 12 μm and average particle size of 2.1 μm. Electron microscopy observations support these findings and demonstrate that the particles and their aggregates have rounded irregular shape. Moreover, it was found that the morphology and particle size of the powder does not depend on the strontium content. Doping (Ba1-xSrx)7Nb4MoO20 with 15 mol.% and 20 mol.% Sr2+ leads to the formation of a significant amount of secondary phases due to exceeding the solubility limit of strontium, thus making these compositions unsuitable for use in solid oxide fuel cells. V.I.Vernadsky Institute of General and Inorganic Chemistry 2022-05-25 Article Article Inorganic Chemistry Неорганическая химия Неорганічна хімія application/pdf https://ucj.org.ua/index.php/journal/article/view/433 10.33609/2708-129X.88.04.2022.63-78 Ukrainian Chemistry Journal; Vol. 88 No. 4 (2022): Ukrainian Chemistry Journal; 63-78 Украинский химический журнал; Том 88 № 4 (2022): Ukrainian Chemistry Journal; 63-78 Український хімічний журнал; Том 88 № 4 (2022): Український хімічний журнал; 63-78 2708-129X 2708-1281 en https://ucj.org.ua/index.php/journal/article/view/433/221
institution Ukrainian Chemistry Journal
baseUrl_str
datestamp_date 2022-07-06T15:59:08Z
collection OJS
language English
topic_facet solid-state synthesis
perovskite
Ba7Nb4MoO20
powder
electrolyte.
format Article
author Bezdorozhev, Oleksii
Solodkyi, Ievgen
Ostroverkh, Anna
Morozov, Igor
Ostroverkh, Yevhenii
Solonin, Yuriy
spellingShingle Bezdorozhev, Oleksii
Solodkyi, Ievgen
Ostroverkh, Anna
Morozov, Igor
Ostroverkh, Yevhenii
Solonin, Yuriy
SYNTHESIS AND CHARACTERIZATION OF (Ba1-хSrx)7Nb4MoO20 POWDERS FOR PROTON-CONDUCTING SOLID OXIDE FUEL CELLS
author_facet Bezdorozhev, Oleksii
Solodkyi, Ievgen
Ostroverkh, Anna
Morozov, Igor
Ostroverkh, Yevhenii
Solonin, Yuriy
author_sort Bezdorozhev, Oleksii
title SYNTHESIS AND CHARACTERIZATION OF (Ba1-хSrx)7Nb4MoO20 POWDERS FOR PROTON-CONDUCTING SOLID OXIDE FUEL CELLS
title_short SYNTHESIS AND CHARACTERIZATION OF (Ba1-хSrx)7Nb4MoO20 POWDERS FOR PROTON-CONDUCTING SOLID OXIDE FUEL CELLS
title_full SYNTHESIS AND CHARACTERIZATION OF (Ba1-хSrx)7Nb4MoO20 POWDERS FOR PROTON-CONDUCTING SOLID OXIDE FUEL CELLS
title_fullStr SYNTHESIS AND CHARACTERIZATION OF (Ba1-хSrx)7Nb4MoO20 POWDERS FOR PROTON-CONDUCTING SOLID OXIDE FUEL CELLS
title_full_unstemmed SYNTHESIS AND CHARACTERIZATION OF (Ba1-хSrx)7Nb4MoO20 POWDERS FOR PROTON-CONDUCTING SOLID OXIDE FUEL CELLS
title_sort synthesis and characterization of (ba1-хsrx)7nb4moo20 powders for proton-conducting solid oxide fuel cells
description This work reports on the preparation and characterization of Sr2+-doped Ba7Nb4MoO20 powders prepared by a solid-state synthesis as promising materials for solid oxide fuel cells. The influence of synthesis parameters and strontium content (x = 0; 0.05; 0.10; 0.15; 0.20) on the phase composition and properties of (Ba1-xSrx)7Nb4MoO20 powders was studied. The results of the phase analysis show that (Ba1-xSrx)7Nb4MoO20 (x = 0; 0.05; 0.10) powders with a minimum amount of secondary phases can be obtained after at least three repeated synthesis cycles at 1060–1080 оС for 10 h. According to the laser diffraction analysis, the synthesized powders comprise particles with a polydisperse size distribution spreading from 0.05 μm to 12 μm and average particle size of 2.1 μm. Electron microscopy observations support these findings and demonstrate that the particles and their aggregates have rounded irregular shape. Moreover, it was found that the morphology and particle size of the powder does not depend on the strontium content. Doping (Ba1-xSrx)7Nb4MoO20 with 15 mol.% and 20 mol.% Sr2+ leads to the formation of a significant amount of secondary phases due to exceeding the solubility limit of strontium, thus making these compositions unsuitable for use in solid oxide fuel cells.
publisher V.I.Vernadsky Institute of General and Inorganic Chemistry
publishDate 2022
url https://ucj.org.ua/index.php/journal/article/view/433
work_keys_str_mv AT bezdorozhevoleksii synthesisandcharacterizationofba1hsrx7nb4moo20powdersforprotonconductingsolidoxidefuelcells
AT solodkyiievgen synthesisandcharacterizationofba1hsrx7nb4moo20powdersforprotonconductingsolidoxidefuelcells
AT ostroverkhanna synthesisandcharacterizationofba1hsrx7nb4moo20powdersforprotonconductingsolidoxidefuelcells
AT morozovigor synthesisandcharacterizationofba1hsrx7nb4moo20powdersforprotonconductingsolidoxidefuelcells
AT ostroverkhyevhenii synthesisandcharacterizationofba1hsrx7nb4moo20powdersforprotonconductingsolidoxidefuelcells
AT soloninyuriy synthesisandcharacterizationofba1hsrx7nb4moo20powdersforprotonconductingsolidoxidefuelcells
first_indexed 2025-09-24T17:43:44Z
last_indexed 2025-09-24T17:43:44Z
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