Synthesis, sintering and impedance spectroscopy of 8mol% yttria-doped ceria solid electrolyte

Densification of nano-CeO2 ceramics as nuclear oxide surrogate by spark plasma sintering

“…At this and higher sintering temperatures, the samples exhibited considerable grain growth with the smallest grain size being in the sub-micrometer range (0.35 lm) [9]. Generally similar results were obtained with yttria-, and gadolinia-doped ceria when conventional sintering methods were used [15,16]. In a more recent study, Mori et al [17] investigated the sintering of dysprosiadoped ceria by conventional and spark plasma sintering (SPS) methods and found that a combination of these two methods gave the best results: 95+% dense samples with a grain size of <300 nm were obtained.…”

Preparation and characterization of Yb-doped Ba(Ce,Zr)O3 nanopowders with high sinterability

“…9 XRD patterns for the pellets of BCZYb after the pellet was sintered at 1,400°C (a), after the pellet was exposed to pure CO 2 at 600°C for 7 h (b), and, for comparison the XRD spectrum of BaCe 0.95 Yb 0.05 O 2.975 (BCYb) that was exposed to CO 2 at 600°C for 7 h (c) grain. The evolution of impedance diagram as a function of grain size was also discussed by Tadokoro et al [27] for CeO 2 -8 mol% Y 2 O 3 .…”

Effect of zinc oxide on yttria doped ceria

“…For the sintering aid, CoO, MnO, Al 2 O 3 and CuO were found effectively improving the densification but they showed detrimental influence on conductivity [16][17][18][19][20][21]. For the powder synthesis, nanosized YDC powder with low agglomeration was obtained by gel combustion method [22][23][24][25][26][27]. Nevertheless, compared with conventional solid state reaction method, this route involves pH value controlling, concentration selection and other extra procedures.…”