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

Dense BaZr0.5Ce0.3Y0.2O3-δ (BZCY532) proton conductors were prepared by a spark plasma sintering method. Their conductivities were determined in different atmospheres: dry air, wet N2 and wet H2. 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 °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
Elsevier, 2016. Vol. 42, no 3, 4393-4399 p.
Keyword [en]
A. Sintering, B. Grain size, C. Ionic conductivity, E. Fuel cells
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-180918DOI: 10.1016/j.ceramint.2015.11.121Scopus ID: 2-s2.0-84951929406OAI: oai:DiVA.org:kth-180918DiVA: diva2:898006
Note

QC 20160127

Available from: 2016-01-27 Created: 2016-01-25 Last updated: 2016-01-27Bibliographically approved

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CiteExportLink to record
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Citation style
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