Effect Of The Gadolinium Oxide Addition On The Electrical Properties Of Tetragonal Zirconium Dioxide

The aim of this work was examination of gadolinium-doped 3YSZ electrical and structural properties. Such materials may be used as electrolytes in intermediate temperature solid oxide fuel cells (IT-SOFC). First step of the research was synthesis of 3YSZ with different contents of gadolinium (0.25; 0...

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Bibliographic Details
Published inArchives of metallurgy and materials Vol. 60; no. 2; pp. 993 - 998
Main Authors Cyran, J., Wyrwa, J., Drożdż, E., Dziubaniuk, M., Rękas, M.
Format Journal Article
LanguageEnglish
Published Warsaw De Gruyter Open 01.06.2015
Polish Academy of Sciences
Subjects
electrical properties
Gadolinium (III) oxide
grain boundary conductivity
tetragonal zirconia
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Summary:The aim of this work was examination of gadolinium-doped 3YSZ electrical and structural properties. Such materials may be used as electrolytes in intermediate temperature solid oxide fuel cells (IT-SOFC). First step of the research was synthesis of 3YSZ with different contents of gadolinium (0.25; 0.5; 1.0 at %). Prepared materials were characterized by high porosity. No effect of gadolinium addition on grain size was observed. The experimentally determined values of grain interiors electrical conductivities for gadolinium doped samples are comparable to grain interior conductivities of gadolinium free tetragonal zirconia. On the other hand, a clear effect of gadolinium addition on electrical conductivity of grain boundaries was observed. It was found that 3YSZ containing 0.25 at. % Gd was the most promising from the investigated materials as a solid electrolyte for IT SOFC.
ISSN:2300-1909
1733-3490
2300-1909
DOI:10.1515/amm-2015-0248