Influences of ZnO on the Properties of SrZr^sub 0.9^Y^sub 0.1^O^sub 2.95^ Protonic Conductor

The effects of ZnO additive on the microstructure, phase formation, and electrical conduction of yttrium-doped strontium zirconate were investigated. The sintering temperature of ... can be lowered to 1350...C by addition of ZnO. The electrical conduction is found to be strongly correlated with the...

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Published inJournal of the American Ceramic Society Vol. 91; no. 5; p. 1534
Main Authors Peng, Zhenzhen, Guo, Ruisong, Yin, Ziguang, Li, Juan
Format Journal Article
LanguageEnglish
Published Columbus Wiley Subscription Services, Inc 01.05.2008
Subjects
Ceramic sintering
Ceramics
Conductivity
Materials science
Microstructure
Zirconium oxides
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Summary:The effects of ZnO additive on the microstructure, phase formation, and electrical conduction of yttrium-doped strontium zirconate were investigated. The sintering temperature of ... can be lowered to 1350...C by addition of ZnO. The electrical conduction is found to be strongly correlated with the ZnO contents. When the ZnO content is <5 mol%, the electrical conductivity increased with an increase in the ZnO contents. Electromotive force measurements under fuel cell conditions indicated a pure ionic conduction over this range of ZnO contents. However, it had a detrimental effect on the electrical conduction when the ZnO content was more than 6 mol%. The main reason for this is discussed according to the defect chemistry and microstructure. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0002-7820
1551-2916