Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.9/2187
Título: Effect of the sintering conditions on the morphology of La9.33Si2Ge4O26 oxyapatite for SOFCs electrolytes
Autor: Macatrão, Mafalda
Santos, Mário João dos
Alves, Cátia
Oliveira, F. A. Costa
Marcelo, Teresa
Mascarenhas, João
Trindade, B.
Palavras-chave: SOFC
Electrolytes
Sintering
Data: 2013
Editora: Microscopy Society of America
Citação: Macatrão, M.; Santos, M.; Alves, C.; Oliveira, F.A.C.; Marcelo, T.; Mascarenhas, J.; Trindade, B. Effect of the sintering conditions on the morphology of La9.33Si2Ge4O26 oxyapatite for SOFCs electrolytes. In: Microscopy and Microanalysis, 2013, Vol. 19, Suppl 4, p. 117-118
Resumo: Solid oxide fuel cells (SOFCs) are devices that allow direct conversion of chemical to electrical energy through an electrochemical reaction in a cleaner and more efficient way than conventional processes (eg. gas turbines). They are characterized by the use of a solid oxide material as the electrolyte. Yttria-stabilised zirconia (YSZ) has traditionally been used in SOFCs electrolytes at temperatures in the range of 850-1000 °C. Recent research is being focused on the development of new materials with increased ionic conductivity at intermediate temperatures (500-800ºC) as alternative materials to YSZ. Rare earth silicates with an apatite-type structure, such as doped lanthanum oxides of general formula La10(MO4)6O2, where M = Ge, Co, Si, Al, or P, are among these materials. The major limitation associated with the manufacture of these materials is their poor sinterability, which requires high sintering temperatures (1600ºC).
URI: http://hdl.handle.net/10400.9/2187
ISSN: 1431-9276
Versão do Editor: http://dx.doi.org/10.1017/S1431927613001207
Aparece nas colecções:ES - Artigos em revistas internacionais

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