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Memorias de investigación
Artículos en revistas:
Tailoring Disorder and Dimensionality: Strategies for Improved Solid Oxide Fuel Cell Electrolytes
Año:2009
Áreas de investigación
  • Industria electrónica
Datos
Descripción
Reducing the operation temperature of solid oxide fuel cells is a major challenge towards their widespread use for power generation. This has triggered an intense materials research effort involving the search for novel electrolytes with higher ionic conductivity near room temperature. Two main directions are being currently followed: the use of doping strategies for the synthesis of new bulk materials and the implementation of nanotechnology routes for the fabrication of artificial nanostructures with improved properties. In this paper, we review our recent work on solid oxide fuel cell electrolyte materials in these two directions, with special emphasis on the importance of disorder and reduced dimensionality in determining ion conductivity. Substitution of Ti for Zr in the A(2)Zr(2-y)Ti(y)O(7) (A=Y, Dy, and Gd) series, directly related to yttria stabilized zirconia (a common fuel cell electrolyte), allows controlling ion mobility over wide ranges. In the second scenario we describe the strong enhancement of the conductivity occurring at the interfaces of superlattices made by alternating strontium titanate and yttria stabilized zirconia ultrathin films. We conclude that cooperative effects in oxygen dynamics play a primary role in determining ion mobility of bulk and artificially nanolayered materials and should be considered in the design of new electrolytes with enhanced conductivity.
Internacional
Si
JCR del ISI
Si
Título de la revista
CHEMPHYSCHEM
ISSN
1439-4235
Factor de impacto JCR
3,636
Información de impacto
Volumen
10
DOI
10.1002/cphc.200800691
Número de revista
7
Desde la página
1003
Hasta la página
1010
Mes
ENERO
Ranking
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Participantes
  • Participante: Alberto Rivera-Calzada (Universidad Complutense de Madrid)
  • Participante: Carlos León (Universidad Complutense de Madrid)
  • Participante: Javier Garcia-Barriocanal (Universidad Complutense de Madrid)
  • Participante: Karla J. Moreno (Cinvestav Saltillo)
  • Participante: Mario R. Diaz-Guillen (Cinvestav Saltillo)
  • Participante: Jose A. Diaz-Guillen (Cinvestav Saltillo)
  • Autor: Enrique Iborra Grau (UPM)
  • Participante: Antonio F. Fuentes (Cinvestav Saltillo)
  • Participante: Zouhair Sefrioui (Universidad Complutense de Madrid)
  • Participante: Stephen J. Pennycook (Oak Ridge Nat. Lab.)
  • Participante: Jacobo Santamaría (Universidad Complutense de Madrid)
  • Participante: Maria Varela (Oak Ridge Nat. Lab.)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Microsistemas y Materiales Electrónicos
  • Departamento: Tecnología Electrónica
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