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Optimization of Alloy-Coating Compositions for Use as Solid Oxide Fuel Cell Interconnects

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Abstract

Reduction in the operating temperature of solid oxide fuel cells (SOFCs) allows for the use of ferritic stainless steels as the interconnect material. However, cathode poisoning due to volatilization of chromium from the oxide scale formed on these alloys requires the use of a ceramic coating on the alloy. The reaction layer formed between the coating and the alloy affects the performance of the fuel cell, so the composition and properties of this layer must be considered in selecting the alloy and coating compositions. In this paper, the factors relevant to selection of the alloy/coating materials and the effect of the alloy-coating interaction on these factors are discussed.

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Acknowledgments

Financial support from the Department of Energy through the Building EPSCoRState/ National Laboratory Partnerships Program (Timothy Fitzsimmons, Program Officer) and the National Energy Technology Laboratory (NETL) (Briggs White, Program Officer) is gratefully acknowledged.

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Authors and Affiliations

  1. Materials Research and Education Center, Auburn University, 275 Wilmore Laboratories, Auburn, AL, 36849, USA

    Jeffrey W. Fergus, Yu Zhao & Yingjia Liu

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  1. Jeffrey W. Fergus
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  2. Yu Zhao
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  3. Yingjia Liu
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Fergus, J.W., Zhao, Y. & Liu, Y. Optimization of Alloy-Coating Compositions for Use as Solid Oxide Fuel Cell Interconnects. MRS Online Proceedings Library 1384, 8 (2011). https://doi.org/10.1557/opl.2012.336

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