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Catalytic Activity of Ceria-Based Complex Metal Oxides in Alkaline and Acidic Environments

Published online by Cambridge University Press:  02 August 2013

Matthew C Schrandt ,
Praveen Kolla  and
A. Smirnova
Matthew C Schrandt
Affiliation:
Materials Engineering and Science Program, South Dakota School of Mines and Technology, Rapid City, SD 57701, U.S.A.
Praveen Kolla
Affiliation:
Materials Engineering and Science Program, South Dakota School of Mines and Technology, Rapid City, SD 57701, U.S.A.
A. Smirnova
Affiliation:
Department of Chemistry and Biological Science, South Dakota School of Mines and Technology, Rapid City, SD 57701, U.S.A.
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Abstract

Pt catalysts are the leading catalysts for use in ORR. However, Pt is an expensive catalyst and with limited supply can not be considered a sustainable material for feasible application that is scalable in the economy. This calls for new solutions for catalyst materials that either mitigate the amount of Pt used in catalysts by developing hybrid catalysts, or to replace Pt altogether with a material with similar or better catalytic activity. Perovskite LSCF and Fluorite GDC materials with proven catalytic activity in solid oxide fuel cells are herein explored for their catalytic reduction of oxygen for use at low temperatures. Since the materials lack electronic conductivity at low temperatures, we have improved their conductivity with graphene. The resulting materials are compared to Pt in their ORR catalytic capabilities and electronic conductivity.

Keywords

catalyticenergy generationelectrical properties
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1542: Symposium G – Electrochemical Interfaces for Energy Storage and Conversion—Fundamental Insights from Experiments to Computations , 2013 , mrss13-1542-g09-06
Copyright
Copyright © Materials Research Society 2013 

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References

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