A Novel Composite Cathode for Low-Temperature SOFCs Based on Oxide Proton Conductors

Authors

  • Lei Yang,

    1. Center for Innovative Fuel Cell and Battery Technologies, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332 (USA)
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  • Chendong Zuo,

    1. Center for Innovative Fuel Cell and Battery Technologies, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332 (USA)
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  • Shizhong Wang,

    1. Center for Innovative Fuel Cell and Battery Technologies, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332 (USA)
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  • Zhe Cheng,

    1. Center for Innovative Fuel Cell and Battery Technologies, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332 (USA)
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  • Meilin Liu

    Corresponding author
    1. Center for Innovative Fuel Cell and Battery Technologies, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332 (USA)
    • Center for Innovative Fuel Cell and Battery Technologies, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332 (USA).
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  • This work was supported by U.S. Department of Energy, Office of Basic Energy Sciences, grant DE-FG02-06ER15837.

Abstract

original image

A composite cathode, consisting of Ba(Zr0.1Ce0.7Y0.2)O3−δ (BZCY) and Sm0.5Sr0.5CoO3−δ (SSC), exhibits remarkable catalytic activity towards oxygen reduction, dramatically enhancing the performance of low-temperature SOFCs based on an oxide proton conductor, as shown in the figure. The peak power densities represent the best performances ever reported for this type of SOFCs—a promising low-cost SOFC system.

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