Ceria-yttria-based solid electrolytes for intermediate temperature solid oxide fuel cell

• Autorzy: Dudek M. , Molenda J.
• Konferencja: IX National Conference on Fast Ion Conductors , Wrocław-Borowice , 9-12 December 2004
• Języki publikacji: EN

Abstrakty

EN

Pure ceria and ceria-yttria solid solution powders with formula Ce1-xYxO2, where 0 < x < 0.30 were prepared by the coprecipitation-calcination method. The samples were sintered at 1250-1600 °C for 2 hours. The XRD method was used to determine cell parameters of the samples. Their electrical properties were investigated by ac impedance spectroscopy in the temperature range of 100-700 °C in air. It was found that the electrical conductivity, fracture toughness, and flexural strength of the samples increase with yttria concentration and reach a maximum for Ce0.85Y0.15O2. The obtained material seems to be a promising solid electrolyte for IT-SOFC.

Słowa kluczowe

EN

ceria; solid electrolyte; electrical properties; zirconia; mechanical properties

PL

tlenek ceru; tlenek cyrkonu; ditlenek cyrkonu; elektrolit stały; właściwości elektryczne; właściwości mechaniczne

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2006
• Tom: Vol. 24, No. 1
• Strony: 45--52
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Dudek M.

autor

Molenda J.

• AGH University of Science and Technology, Faculty of Materials Science and Ceramics al. Mickiewicza 30, 30-059, Kraków,

Bibliografia

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