G. Xia, Z. G. Yang, S. Simner, J. Stevenson, Pacific Northwest National Laboratory, Richland, WA
In intermediate and low temperature SOFCs, the interconnects are typically made from a high temperature oxidation resistant alloy which must be interfaced with the conductive oxide cathodes. For a stable performance and maximum stack power output, the cathode/interconnect interface must be stable and offer a minimum electrical resistance that arises from the scale growth on the alloy interconnects, interfacial interactions and contacts between metal interconnects and oxide cathodes. In this work, a series of perovskite conductive oxides that are potential cathode candidates were selected and their chemical compatibility and interfacial electrical resistance with the ferritic stainless steel Crofer22 APU, a candidate interconnect alloy, were investigated. This paper will present details of this study.
Summary: In this work, a series of perovskite conductive oxides that are potential cathode candidates were selected and their chemical compatibility and interfacial electrical resistance with the ferritic stainless steel Crofer22 APU, a candidate interconnect alloy, were investigated. This paper will present details of this study.