It has been demonstrated that the samarium and neodymium codoped ceria (Ce_0.8Sm_0.1Nd_0.1O_2−δ abbreviated SNDC) shows high ionic conductivity at intermediate operating temperature (0.012 S/cm at 500°C. However, the poor mechanical properties limited its applications in solid fuel cells and oxygen sensors. Present research reports an approach to improve the mechanical properties of SNDC by adding another kind of oxide solid electrolyte, the apatite‐type lanthanum silicate (La₁₀Si₆O₂₇ abbreviated LSO). The SNDC/LSO composites were prepared by mixing the powders with different proportion, and sintered at 1600°C. Their structure, morphology, mechanical, and electrical properties were characterized. It was found that with the 5wt%‐7wt% LSO addition, both the flexural strength and the fracture toughness were improved. The improvement of flexural strength for the SNDC reached as high as 71%. It is also seen that the ionic conductivity of SNDC was enhanced with the adding of 5wt% LSO. The enhanced mechanical properties and electrical conductivity of SNDC/LSO composites make them a promising candidates for high‐performance SOFCs and oxygen sensors.

中文翻译：

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Ce0.8Sm0.1Nd0.1O2-δ/ La10Si6O27复合电解质的机械和电性能协同增强

已证明that和钕共掺杂二氧化铈（Ce _0.8 Sm _0.1 Nd _0.1 O2 _-δ缩写SNDC）在中等工作温度下（500°C时为0.012 S / cm）显示出高离子电导率。它在固体燃料电池和氧气传感器中的应用。目前的研究报道了一种通过添加另一种氧化物固体电解质（磷灰石型硅酸镧（La ₁₀ Si ₆ O _27））来改善SNDC的机械性能的方法。缩写LSO）。通过混合不同比例的粉末来制备SNDC / LSO复合材料，并在1600°C下烧结。表征了它们的结构，形态，机械和电性能。发现添加5wt％-7wt％的LSO既提高了弯曲强度，又提高了断裂韧性。SNDC的抗弯强度提高高达71％。还可以看出，加入5wt％的LSO可以提高SNDC的离子电导率。SNDC / LSO复合材料的增强的机械性能和导电性使其成为高性能SOFC和氧气传感器的有希望的候选者。