Effects of dysprosium oxide on sintering behavior and electrical conductivity of samarium doped ceria
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2018
Autores IPEN
SHIRLEY LEITE DOS REIS
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CONFERENCE ON ELECTRONIC AND ADVANCED MATERIALS
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Resumo
Solid electrolytes based on rare earth-doped cerium dioxide are
of considerable interest for potential application in intermediate-
temperature solid oxide fuel cells, IT-SOFC. Nevertheless, some
constraints related to their sintering behavior along with improvement
of the ionic conductivity are still object of investigation. In
this work, dysprosium ion was chosen as a second additive/dopant,
aiming to obtain a ceramic solid electrolyte with optimized ionic
conductivity. Compounds of Sm0.2-xDyxCe0.8O1.9 with 0 % x % 0.2
were prepared by solid-state reaction, and the influence of the additive
content on densification and ionic conductivity was analyzed
by density, X-ray diffraction and impedance spectroscopy measurements.
All compositions were found to exhibit cubic fluorite-type
structure. The sintered solid electrolytes achieved densities higher
than 92% of the theoretical value after sintering at 1500°C/3 h, and
higher ionic conductivity than the Sm0.2Ce0.8O1.9 parent electrolyte.
Como referenciar
REIS, S.L.; MUCCILLO, E.N. Effects of dysprosium oxide on sintering behavior and electrical conductivity of samarium doped ceria. In: CONFERENCE ON ELECTRONIC AND ADVANCED MATERIALS, January 17-19, 2018, Orlando, Florida, USA. Abstract... Westerville, OH, USA: The American Ceramic Society, 2018. p. 35-35. Disponível em: http://repositorio.ipen.br/handle/123456789/30199. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.