Effect of Doping ZrO2 on the Properties of (CeO2)0.86(SmO1.5)0.14 Ceramics

Abstract

Abstract: The effect of doping ZrO₂ on the electrical conductivity and strength of CeO₂/Sm₂O₃ ceramics was
investigated, and the microstructure of samples was studied and analyzed by means of XRD and SEM. The results showed that doping ZrO₂ could decrease
the electrical conductivity. It was attribute to the reason that solution of ZrO₂in ceria-based electrolyte reduced the lattice constant. Doping ZrO₂
increased the fracture strength and the fracture was intergranular for the reason that ZrO₂ toughened the grain-boundary. Ceramics doped with ZrO₂ were
dense as well. (CeO₂)_0.86(SmO_1.5)_0.14 doped with 2.5mol% ZrO₂ may be a potential electrolyte material used for SOFC for its proper
electrical conductivity and strength.

Key words: ceria, electrolyte, electrical conductivity, strength

CLC Number:

TN304

LIANG Guang-Chuan,LIU Wen-Xi,CHEN Yu-Ru,DU Chun-Sheng,QIU Ying. Effect of Doping ZrO₂ on the Properties of (CeO₂)_0.86(SmO_1.5)_0.14 Ceramics[J]. Journal of Inorganic Materials.

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Effect of Doping ZrO₂ on the Properties of (CeO₂)_0.86(SmO_1.5)_0.14 Ceramics

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