Synthesis and properties of porous Sr 0.96 Y 0.04 Ti 1−x Nb x O 3

Ewa Drożdż; Jakub Karczewski

doi:10.1016/j.ssi.2018.03.018

Synthesis and properties of porous Sr 0.96 Y 0.04 Ti 1−x Nb x O 3

Abstract

A series of porous, single phase Sr0.96Y0.04Ti1-xNbxO3 samples was obtained using a wet synthesis method (modified citrate sol-gel) method. Temperature-programmed reduction (TPR) and temperature-programmed oxidation (TPO) measurements have shown high stability of the obtained material in variable (oxidizing/reducing) atmospheres. All samples exhibit high conductivity in hydrogen atmosphere with the highest value (around 1S/cm) in case of the material with nominal composition Sr0.96Y0.04Ti0.98Nb0.02O3. Moreover, measurements of the electrical resistance carried out for Sr0.96Y0.04Ti1-xNbxO3 samples in oxidation-reduction cycles confirmed the high stability of these materials and extremely rapid electrical response with change of the atmosphere . The results of the studies show that highly porous niobium and yttrium-doped strontium titanate materials can be used as a component for SOFC anodes or resistance gas sensor.

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Authors (2)

Ewa Drożdż
- Akademia Górniczo-Hutnicza Wydział Inżynierii Materiałowej i Ceramiki Katedra Chemii Nieorganicznej
Jakub Karczewski dr hab. inż.

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: SOLID STATE IONICS no. 320, pages 305 - 309,
ISSN: 0167-2738
Language:: English
Publication year:: 2018
Bibliographic description:: Drożdż E., Karczewski J.: Synthesis and properties of porous Sr 0.96 Y 0.04 Ti 1−x Nb x O 3// SOLID STATE IONICS. -Vol. 320, (2018), s.305-309
DOI:: Digital Object Identifier (open in new tab) 10.1016/j.ssi.2018.03.018
Verified by:: Gdańsk University of Technology