Abstract
This paper reviews the electrical properties of the stabilized zirconia with high mechanical strength and toughness. These oxide ion conductors are attractive for the electrolyte of the self-supported planar type solid oxide fuel cells(SOFC). The electrical conductivity of the tetragonal stabilized zirconia(TZP), which has high bending strength of 1200MPa, was measured to be 6.5x10−2S/cm at 1,000°C. The electrical and mechanical properties of the composites of cubic stabilized zirconia and alumina were examined. The 20 weight% Al2O3 and 80 weight% stabilized zirconia with 8 mole% Y2O3 showed improved mechanical strength and only slight decrease in electrical conductivity.
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Yamamoto, O., Kawahara, T., Kohno, K., Takeda, Y., Imanshi, N. (1991). Oxide Ion Conductors for Solid Oxide Fuel Cells. In: Radhakrishna, S., Daud, A. (eds) Solid State Materials. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-09935-3_24
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DOI: https://doi.org/10.1007/978-3-662-09935-3_24
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