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Silica-scavenging effects in ceria-based electrolytes

Gadolinium-doped ceria based powders were co-fired with additions of silica, and silica and lanthanum oxide, to test the silicascavenging role of lanthanum. The formation of one ionic conducting secondary phase, instead of an insulating phase, was attempted. The structural, microstructural and electrical characterization of these samples confirmed the formation of one apatite-type lanthanum silicate-based phase...