منابع مشابه
Optimization of ionic conductivity in doped ceria.
Oxides with the cubic fluorite structure, e.g., ceria (CeO2), are known to be good solid electrolytes when they are doped with cations of lower valence than the host cations. The high ionic conductivity of doped ceria makes it an attractive electrolyte for solid oxide fuel cells, whose prospects as an environmentally friendly power source are very promising. In these electrolytes, the current i...
متن کاملOptimizing ionic conductivity in doped ceria
David Andersson et al. report calculations revealing how doped oxides with cubic fluorite structures become effective ionic conductors. Cubic fluorite structures, such as ceria (CeO2), can become effective ionic conductors when doped with cations of lesser valence than the host cations. Doped ceria thus has potential as an electrolyte for environmentally friendly solid oxide fuel cells. Anderss...
متن کاملEnhanced Ionic Conductivity in Heavily Doped Ceria Nanoceramics
CINSO (Centro de INvestigaciones en SOlidos) CITEFA-CONICET Juan Bautista de La Salle 4397, Villa Martelli (B1603ALO) Buenos Aires, Argentina dlamas@citefa. gov.ar;[email protected]
متن کاملImprovement of ionic conductivity of gadolinium doped ceria electrolyte with nano CuO sintering aid
Gadanium doped cerium oxide ceramic (GDC) is widely used as solid electrolytes in solid oxide fuel cells because of its high oxygen ion conductivity. In this study, the effect of addition of nano CuO as a sintering aid on the properties of GDC electrolyte were investigated. For this purpose, 0.2, 0.5, and 1% mole of nano Cuo was added to GDC ceramics, which was synthesized by the solid-state me...
متن کاملImpact of doping on the ionic conductivity of ceria: a comprehensive model.
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 o...
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ژورنال
عنوان ژورنال: Journal of the American Ceramic Society
سال: 2020
ISSN: 0002-7820,1551-2916
DOI: 10.1111/jace.17066