Synthesis Methods and Properties of Mixed Oxides Electrolytes

Synthesis Methods and Properties of Mixed Oxides Electrolytes 

The synthesis route for nanoparticle ordered structures with homogeneous composition and preparation conditions influences the sintering temperature, grain sizes, and grain boundary. 

For the particular cases of zirconia- and ceria-based electrolytes, the ionic conductivity is mostly related to dopant nature, composition, microstructure, local structure, impurity and processing, and so on [19,20]. In many cases, the 

Ma et al. [21] reported the influence of the sintering temperature on the grain conductivity as well as on the grain boundary conductivity for 20mol% Gd-doped Ce02. The effect of temperature is well correlated with that of the synthesis route. Examples can be given for more complex compositions such as Ceo.8- Gdo,2Sr t02 5, 0 .v 0.1. 

In the sol-gel method, the nature of the complexant (fuel) is also important The sintered density and the activation energies of compacts obtained from microwave-assisted gel-combined combustion process for a series of fuels (citric acid, urea, and glycine) showed different results. This was well evidenced by determining the crystal structure, particle size, specific surface area, and morphology of nanocrystalline 8mol% yttria-stabilized zirconia (YSZ) powders [23]. 

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