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Synthesis of Mesoporous Gadolinium Doped Ceria - Platinum Composite

Published online by Cambridge University Press:  21 February 2012

Hoi Yung
Affiliation:
Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
Kwong-Yu Chan
Affiliation:
Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
Frank Leung-Yuk Lam
Affiliation:
Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong
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Abstract

Oxygen reduction in SOFC cathodes has long been the rate determining step in SOFC operations, mixed ionic-electronic conductors (MIECs) and/or forming composite between cathode and electrolyte materials have been common strategies in order to aid the cathode kinetics. We demonstrate here a viable synthesis route to impregnate mesopores with high loading of platinum towards a mesoscale bicontinuous material that composed of channels of a fast ionic conductor, i.e. gadolinium doped ceria (GDC) intertwined with channels of a good electronic conductor, i.e. Pt. This highly structural composite material holds the promise of a high performing cathode in SOFC.

Type
Research Article
Copyright
Copyright © Materials Research Society 2012

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