Synthesis, sintering and impedance spectroscopy of 8 mol percent yttria-doped ceria solid electrolyte
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Journal of Power Sources
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CeO2–8 mol% Y2O3 solid solution was prepared by the coprecipitation technique. Cerium nitrate and yttrium oxide were used as
precursors. The main purpose of this work was to evaluate some precipitation parameters, the densification behaviour of powder compacts,
and the electrical resistivity of sintered ceramics. Results on thermal analyses show that the decomposition of the precipitated gel is
almost complete at 400 ◦C. The specific surface area of calcined powders decreases for increasing precipitation temperature. For powders
precipitated at room temperature, the BET surface area is also found to be dependent on the gel storage time before calcination. The
densification of powder compacts increases sharply for sintering temperatures higher than 1400 ◦C. However, a few minutes at 1500 ◦C
is sufficient for the compacts to attain a high densification. Impedance spectroscopy experiments reveal that the ionic resistivity is not
dependent on most of the synthesis parameters, although the grain size play a key role in the intergranular component of the resistivity.CeO2–8 mol% Y2O3 solid solution was prepared by the coprecipitation technique. Cerium nitrate and yttrium oxide were used as
precursors. The main purpose of this work was to evaluate some precipitation parameters, the densification behaviour of powder compacts,
and the electrical resistivity of sintered ceramics. Results on thermal analyses show that the decomposition of the precipitated gel is
almost complete at 400 ◦C. The specific surface area of calcined powders decreases for increasing precipitation temperature. For powders
precipitated at room temperature, the BET surface area is also found to be dependent on the gel storage time before calcination. The
densification of powder compacts increases sharply for sintering temperatures higher than 1400 ◦C. However, a few minutes at 1500 ◦C
is sufficient for the compacts to attain a high densification. Impedance spectroscopy experiments reveal that the ionic resistivity is not
dependent on most of the synthesis parameters, although the grain size play a key role in the intergranular component of the resistivity.
Como referenciar
TADOKORO, S.K.; PORFIRIO, T.C.; MUCCILLO, R.; MUCCILLO, E.N.S. Synthesis, sintering and impedance spectroscopy of 8 mol percent yttria-doped ceria solid electrolyte. Journal of Power Sources, v. 130, n. 1-2, p. 15-21, 2004. DOI: 10.1016/j.jpowsour.2003.11.073. Disponível em: http://repositorio.ipen.br/handle/123456789/5719. 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.