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Transport properties of BaZr0.5Ce0.3Y0.2O3-delta proton conductor prepared by spark plasma sintering
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0001-5258-099X
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. Shanghai Institute of Technology, China.ORCID iD: 0000-0003-3060-9987
2016 (English)In: Ceramics International, ISSN 0272-8842, E-ISSN 1873-3956, Vol. 42, no 3, 4393-4399 p.Article in journal (Refereed) PublishedText
Abstract [en]

Dense BaZr0.5Ce0.3Y0.2O3-delta (BZCY532) proton conductors were prepared by a spark plasma sintering method. Their conductivities were determined in different atmospheres: dry air, wet N-2 and wet H-2. Moreover, the potential electronic conductivity contribution to the total conductivity was also identified by testing their total conductivities at different oxygen partial pressures (1-10(-24) atm) in combination with an XPS analysis. It is found that the prepared dense BZCY532 ceramics are good proton conductors at 600 degrees C. In addition, the Ce3+ concentration in the dense BZCY532 ceramics is around 3.5 atm% of the total Ce element, and the electronic contribution to the total conductivity can be neglected after a postheat treatment.

Place, publisher, year, edition, pages
2016. Vol. 42, no 3, 4393-4399 p.
Keyword [en]
Sintering, Grain size, Ionic conductivity, Fuel cells
National Category
Ceramics
Identifiers
URN: urn:nbn:se:kth:diva-182766DOI: 10.1016/j.cerarnint.2015.11.121ISI: 000369190900080OAI: oai:DiVA.org:kth-182766DiVA: diva2:906112
Note

QC 20160223

Available from: 2016-02-23 Created: 2016-02-23 Last updated: 2016-02-23Bibliographically approved

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