Triple-doped Ceria–Carbonate (Ce0.82La0.06Sm0.06Gd0.06O2-δ – (Li–Na)2CO3) nanocomposite solid electrolyte materials for LT–SOFC applications

摘要: Abstract The Ce0.82La0.06Sm0.06Gd0.06O2-δ triple-doped ceria (LSG) and ceria–carbonate nanocomposites (Ce0.82La0.06Sm0.06Gd0.06O2-δ – (Li–Na)2CO3) (LSG–LN) were prepared through sol-gel auto-combustion technique followed by solid state mixing methods. characterization of (such as LSG, 85LSG–15LN, 75LSG–25LN, 65LSG–35LN, respectively) was carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Raman spectroscopy, impedance (IS), the thermal expansion analyses. Sample formation, phase identification, surface morphologies presence elements in materials analyzed with help XRD, SEM EDS studies. oxygen vacancies further structural analysis investigated micro spectroscopy. Total-ionic-conductivity activation energies temperature range from 250 to 600 °C evaluated IS measurements. Thermal revealed moderate values coefficients all samples. Triple-doping carbonate resulted highest total-ion-conductivities i.e., 4.2 × 10−1 S/cm 4 × 10−1 S/cm for 65LSG–35LN respectively. Total-ion-conductivities nanocomposite found be high when compared (i.e., 3.8 × 10−2 S/cm). Therefore, it is concluded that these will useful a promising electrolyte low oxide fuel cell (LT–SOFC) applications.