In the present work, gadolinium doped ceria (Gd_0.1Ce_0.9O_2-δ, GDC) is prepared via sol-gel technique. The as-prepared samples are calcined at different temperatures followed by sintering at various temperatures to obtain uniform microstructure and dense samples. The most uniformly distributed grains with less porosity are obtained for sintered samples at 1450°C for 6 h with an average grain size of 0.85 μm. Single-phase cubic fluorite structure is confirmed by X-ray diffraction analysis. Conductivity analysis reveals that GDC exhibited conductivity around 4.6 × 10⁻³ S.cm⁻¹ at 550°C. The activation energy of 1.01 eV indicates that ions dominate the conduction, which is best for SOFC electrolytes. This conductivity has been achieved at lower sintering temperatures (1450°C) than the solid-state reaction method (1600°C).

在目前的工作中，钆掺杂的二氧化铈（Gd _0.1 Ce _0.9 O _2-δ，GDC）是通过溶胶-凝胶技术制备的。将所制备的样品在不同温度下煅烧，然后在不同温度下烧结以获得均匀的微观结构和致密的样品。在 1450°C 下烧结 6 h 的样品获得了分布最均匀且孔隙率较小的晶粒，平均晶粒尺寸为 0.85 μm。X射线衍射分析证实了单相立方萤石结构。电导率分析表明，GDC 的电导率约为 4.6 × 10 ^-3 S.cm ^-1在 550°C。1.01 eV 的活化能表明离子主导传导，这对于 SOFC 电解质来说是最好的。与固态反应方法 (1600°C) 相比，这种导电性是在较低的烧结温度 (1450°C) 下实现的。