Strontium dopant concentrations influence on Nd1-xSrxMnO3±δ structural and electrical conductivity
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Many different types of ceramic materials are currently being studied as possible
cathodes in Solid Oxide Fuel Cells (SOFC), in an attempt to reduce operating temperatures.
Strontium-doped neodymium manganite (Nd1-xSrxMnO3±δ) was used as an intermediate temperature
solid oxide fuel cell cathode. X-ray diffraction and electrical conductivity of the Nd1-xSrxMnO3±δ
system with a perovskite structure were studied in function of x equal to 0.10, 0.30 and 0.50. An
orthorhombic pseudo-perovskite structure was assigned to all powder compositions prepared by
standard ceramic technique. Electrical conductivity was described by the small polaron hopping
conductivity model, as well as, increases due to regular increments of Sr content for all
compositions. Electrical conductivity was measured at 25.2, 26.4 and 37.1Scm-1 for x = 0.10, 0.30
and 0.50, respectively at 800ºC.
Como referenciar
VARGAS, REINALDO A.; CHIBA, RUBENS; ANDREOLI, MARCO; SANTORO, THAIS A. de B.; SEO, EMILIA S.M. Strontium dopant concentrations influence on Nd1-xSrxMnO3±δ structural and electrical conductivity. Materials Science Forum, v. 660-661, p. 636-640, 2010. DOI: 10.4028/www.scientific.net/MSF.660-661.636. Disponível em: http://repositorio.ipen.br/handle/123456789/4669. 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.