Transport properties of BaZr0.5Ce0.3Y0.2O3-delta proton conductor prepared by spark plasma sintering
2016 (English)In: Ceramics International, ISSN 0272-8842, E-ISSN 1873-3956, Vol. 42, no 3, 4393-4399 p.Article in journal (Refereed) PublishedText
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.
Sintering, Grain size, Ionic conductivity, Fuel cells
IdentifiersURN: urn:nbn:se:kth:diva-182766DOI: 10.1016/j.cerarnint.2015.11.121ISI: 000369190900080OAI: oai:DiVA.org:kth-182766DiVA: diva2:906112
QC 201602232016-02-232016-02-232016-02-23Bibliographically approved