Phase relation studies in the CeO2–La2O3 system at 1100–1500°C

Titania‐Added Ce0.6La0.4O2−δ for the Buffer Layer of High‐Performance Solid Oxide Fuel Cells Using Doped Lanthanum Gallate Electrolyte Film

“…Lanthanum‐doped ceria (LDC) is known as an effective buffer layer material for preventing a chemical reaction between NiO‐based anode and doped LaGaO 3 electrolyte during high‐temperature sintering . In contrast, LDC is also known to have low electrical conductivity and poor sintering properties . Recently, several studies have reported on the electrochemical performances of cells using Sr‐ and Mg‐doped LaGaO 3 (LSGM) electrolyte and LDC buffer layer film fabricated on NiO‐based anode support by using conventional wet processes such as colloidal deposition, centrifugal casting, dip coating, and screen printing followed by co‐firing at a high temperature (1623 K–1673 K) .…”

“…4 In contrast, LDC is also known to have low electrical conductivity and poor sintering properties. [5][6][7][8][9][10][11][12] Recently, several studies have reported on the electrochemical performances of cells using Sr-and Mgdoped LaGaO 3 (LSGM) electrolyte and LDC buffer layer film fabricated on NiO-based anode support by using conventional wet processes such as colloidal deposition, centrifugal casting, dip coating, and screen printing followed by co-firing at a high temperature (1623 K-1673 K). [13][14][15][16][17][18][19] However, it should be noted that OCVs in these studies were usually lower than the theoretical value, and the power densities were lower than that obtained using the LSGM electrolyte film deposited by a dry process such as a pulsed-laser deposition (PLD) method.…”

Phase Relation Studies in the ZrO2-CeO2-La2O3 System at 1500°C

“…In contrary, La 2 O 3 on the surface is exposed to water‐containing environment and forms lanthanum hydroxide instead of hexagonal phase of La 2 O 3 for the samples containing from 100 to 70 mol% La 2 O 3 . Increasing of ceria content coincides with the appearance of A‐modification of La 2 O 3 , as determined by X‐ray diffraction (XRD) patterns 26 …”

“…Grounding on experimental and analytical data, in Du et al 16 the boundaries of the F phase from 0 to 54 mol% La 2 O 3 and A phase from 100 to 94 mol% La 2 O 3 (1600°C) were determined. In the recent research, 26 the study of solid‐state reaction of CeO 2 (fluorite‐type, F) and La 2 O 3 (hexagonal modification of rare‐earth oxides, type A) at 1500°C showed that two types of solid solutions coexisted: cubic F‐CeO 2 and hexagonal A‐La 2 O 3 as determined by X‐ray analysis. These solid solution regimes were separated from end to end with the two‐phase field; (A+F).…”

Solution combustion synthesis and enhanced luminescence of Eu3+-activated Y2Ce2O7 phosphor nanopowders

“…The cerium-lanthanum oxide composites have been studied as thermal barrier coatings and catalyst carriers [18]. However, the investigation of rare earth -doped yttria-ceria composites, particularly their luminescent properties was seldom given attention.…”