Properties of sol-gel prepared Ce1−xSmxO2−x/2 solid electrolytes

Huang, Wensheng; Shuk, P.; Greenblatt, Martha

doi:10.1016/s0167-2738(97)00309-3

Cited by 162 publications

(76 citation statements)

References 22 publications

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“…39 Gd and Sm doped ceria both show a larger O conductivity than Y doped ceria. 48,49 In Table III this conductivity order is also indicated by the experimental activation energies.…”

Section: Resultsmentioning

confidence: 95%

“…[30][31][32][33] In this study, we therefore choose U = 5 eV and J = 0 eV. 34 Spin polarized calculations are performed to be consistent with experimental findings 35,36 and experimental lattice constants of 5.413 Å, 5.423 Å, 5.431 Å, 5.422 Å, 5.476 Å, and 5.411 Å are taken from Y, 37 Gd, 38 Sm, 39 Pr, 40 and La 38 doped CeO 2 and pure CeO 2 , 25 respectively. All structures are fully optimized until the atomic forces are smaller than 0.01 eV/Å.…”

Section: Methodsmentioning

confidence: 99%

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Impact of doping on the ionic conductivity of ceria: A comprehensive model

Wang

Chroneos

Schwingenschlögl

2013

The Journal of Chemical Physics

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Doped ceria is considered as an electrolyte for solid oxide fuel cell applications. The introduction of dopants in the ceria lattice will affect its electronic structure and, in turn, its ionic conductivity. Simulation of these issues using density functional theory becomes complicated by the random distribution of the constituent atoms. Here we use the generalized gradient approximation with on-site Coulomb interaction in conjunction with the special quasirandom structures method to investigate 18.75% and 25% Y, Gd, Sm, Pr, and La doped ceria. The calculated lattice constants and O migration energies allow us to explain the behavior of the conductivity as obtained in experiments.

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“…39 Gd and Sm doped ceria both show a larger O conductivity than Y doped ceria. 48,49 In Table III this conductivity order is also indicated by the experimental activation energies.…”

Section: Resultsmentioning

confidence: 95%

Section: Methodsmentioning

confidence: 99%

Impact of doping on the ionic conductivity of ceria: A comprehensive model

Wang

Chroneos

Schwingenschlögl

2013

The Journal of Chemical Physics

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“…Concerted efforts are being made by researchers around the world to develop such materials. Alternative electrolytes currently being investigated involve doped CeO 2 [4] and (Sr, Mg)-doped LaGaO 3 [5].…”

Section: Introductionmentioning

confidence: 99%

Microstructural studies of bulk and thin film GDC

Muthukkumaran

Kuppusami

Kesavamoorthy

et al. 2007

Ionics

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Ceria rare earth solid solutions are known as solid electrolyte with potential application in oxygen sensors and solid oxide fuel cells. We report the preparation of gadolinia-doped ceria, Ce 0.90 Gd 0.10 O 1.95 , by the conventional solid-state reaction method and the preparation of thin films from a sintered pellet of gadolinia-doped ceria by the pulsed laser deposition technique. The effect of process conditions, such as substrate temperature, oxygen partial pressure, and laser energy on microstructural properties of these films are examined using powder X-ray diffraction, scanning electron microscopy, atomic force microscopy, and Raman spectroscopy.

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“…Huang et al [15] demonstrated that the small particle size of the sol-gel prepared materials allows sintering of the samples into highly dense pellets at significantly lower temperature, 1400 °C compared to that of 1600 °C for the samples prepared by conventional method. However, wet-chemical methods are complicated and that limits their application.…”

Section: Bismuth Oxide/ceria Bilayered Sofcsmentioning

confidence: 99%

Stable High Conductivity Bilayered Electrolytes for Low Temperature Solid Oxide Fuel Cells

Wachsman¹,

Duncan²

2002

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Properties of sol-gel prepared Ce1−xSmxO2−x/2 solid electrolytes

Cited by 162 publications

References 22 publications

Impact of doping on the ionic conductivity of ceria: A comprehensive model

Impact of doping on the ionic conductivity of ceria: A comprehensive model

Microstructural studies of bulk and thin film GDC

Stable High Conductivity Bilayered Electrolytes for Low Temperature Solid Oxide Fuel Cells

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