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Engineered Nanocomposites for Solid Oxide Fuel Cells By Colloidal Crystal Templating

Published online by Cambridge University Press:  17 February 2011

Martyn A McLachlan ,
An Ying ,
John A Kilner ,
David W McComb  and
Stephen J Skinner
Martyn A McLachlan
Affiliation:
[email protected], Imperial College London, Materials, Department of Materials, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom, London, SW7 2AZ, United Kingdom, +44(0))2075949692
An Ying
Affiliation:
[email protected], Imperial College London, Department of Materials and London Centre for Nanotechnology, Department of Materials, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom, London, SW7 2AZ, United Kingdom
John A Kilner
Affiliation:
[email protected], Imperial College London, Department of Materials and London Centre for Nanotechnology, Department of Materials, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom, London, SW7 2AZ, United Kingdom
David W McComb
Affiliation:
[email protected], Imperial College London, Department of Materials and London Centre for Nanotechnology, Department of Materials, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom, London, SW7 2AZ, United Kingdom
Stephen J Skinner
Affiliation:
[email protected], Imperial College London, Department of Materials and London Centre for Nanotechnology, Department of Materials, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom, London, SW7 2AZ, United Kingdom
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Abstract

Colloidal crystal templating has been used to prepare three-dimensionally ordered macroporous (3DOM) films of La1-xSrxMnO3-d (LSM), yttria stabilized zirconia (YSZ) and porous composites of LSM and YSZ. These materials have direct applications as cathodes in solid oxide fuel cells (SOFCs). The 3DOM materials have been prepared by low temperature processing, which is a major step towards overcoming electrode sintering, interdiffusion and deleterious phase formation associated with conventional high temperature processing. The preparation of porous composites and the elimination of high temperature densification presents an opportunity to create SOFCs with a large number of triple phase boundaries which should be accompanied by an corresponding improvement in device performance. The microstructure of the 3DOM films was assessed using scanning electron microscopy and the crystal structure and phase purity assessed by x-ray diffraction.

Keywords

sol-gelscanning electron microscopy (SEM)x-ray diffraction (XRD)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1056: Symposium HH – Nanophase and Nanocomposite Materials V , 2007 , 1056-HH12-02-FF13-02-GG15-02
Copyright
Copyright © Materials Research Society 2008

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