Synthesis of Praseodymium-Doped Ceria-Based Electrolyte Material by Hydrothermal Method

Abstract

Praseodymium-doped ceria (PDC)-based electrolyte powder was synthesised by the hydrothermal method. The as-synthesised powder was studied by various powder characterisations such as X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM) analysis to find out the crystallinity, phase, nature and structural morphology. The shrinkage behaviour (linear shrinkage and shrinkage rate) of PDC powder at high temperatures was performed by dilatometer studies. The crystallographic parameters including the crystallite size, lattice strain and lattice parameter were calculated from XRD analysis. Raman spectroscopy analysis revealed the characteristic peak at 460 cm−1 which corresponds to the F<inf>2g</inf> peak of the cubic phase of ceria and the peak at 550 cm−1 is attributed to intrinsic oxygen vacancies that confirmed the formation of ceria praseodymium solid solution. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.