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Cathodes for IT-SOFCs

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Intermediate-Temperature Solid Oxide Fuel Cells

Part of the book series: Green Chemistry and Sustainable Technology ((GCST))

Abstract

The cathode in SOFCs is the location where oxygen is catalytically reduced to oxygen ions, which plays a key role in converting chemical energy into electrical energy. The sluggish oxygen reduction activity of cathodes at reduced temperatures, i.e., intermediate temperatures, is one of the critical obstacles to achieving IT-SOFCs with high performance. Moreover, the operational stability of IT-SOFCs is also closely related to the cathodes, including their phase-/microstructure stability, chemical/mechanical compatibility with other cell components, and resistance to poisonous elements (such as CO2 and Cr species) from the surrounding atmosphere. To obtain a promising cathode for IT-SOFCs, the development of proper cathode materials and optimization of the cathode microstructure are two commonly accepted strategies with high effectiveness. In this chapter, the basic requirements for cathodes, well-developed cathode materials, and various microstructure-optimized cathodes are comprehensively discussed.

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  1. College of Energy, Nanjing Tech University, Nanjing, China

    Zongping Shao

  2. Department of Chemical Engineering, Curtin University, Perth, WA, Australia

    Moses O. Tadé

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Shao, Z., Tadé, M.O. (2016). Cathodes for IT-SOFCs. In: Intermediate-Temperature Solid Oxide Fuel Cells. Green Chemistry and Sustainable Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-52936-2_3

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