Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Tailoring Disorder and Dimensionality: Strategies for Improved Solid Oxide Fuel Cell Electrolytes
Year:2009
Research Areas
  • Electronics engineering
Information
Abstract
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.
International
Si
JCR
Si
Title
CHEMPHYSCHEM
ISBN
1439-4235
Impact factor JCR
3,636
Impact info
Volume
10
10.1002/cphc.200800691
Journal number
7
From page
1003
To page
1010
Month
ENERO
Ranking
Participants
  • 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.)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Microsistemas y Materiales Electrónicos
  • Departamento: Tecnología Electrónica
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)