Effects of dysprosium oxide on sintering behavior and electrical conductivity of samarium doped ceria

Carregando...
Imagem de Miniatura
Data
Data de publicação:
2018
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
CONFERENCE ON ELECTRONIC AND ADVANCED MATERIALS
Exportar
Mendeley
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
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: 29 Mar 2024.
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.

Agência de fomento