The conductive ceramic coating was used to improve an electrical performance of substrate steel, as well as to prevent the contamination of the chromium ion in SOFC. The (La0.8Sr0.2)0.98MnO3(LSM) conductive material was coated on Crofer22APU via a wet spray coating process. The adhesive strength of an interface between coated layer and metal substrate increased with the surface roughness of metallic interconnects. After the oxidation experiments of coated substrate during 8000 hours, the ASR showed a low value of 23 mΩ·cm2. These results shown that the coated oxides layer prevents the formation and the growth of scale (Cr2O3 and (Mn, Cr, Fe)3O4 layer) and enhance the long-term stability and electrical performance of metallic interconnect for SOFC.
- Advanced Energy Systems Division
Effect of Conducting Oxide Coatings on Crofer22APU Used as Metallic Interconnects for Solid Oxide Fuel Cells
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Pyo, S, Lee, S, Lim, T, Song, R, Hyun, S, & Shin, D. "Effect of Conducting Oxide Coatings on Crofer22APU Used as Metallic Interconnects for Solid Oxide Fuel Cells." Proceedings of the ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. Newport Beach, California, USA. June 8–10, 2009. pp. 909-911. ASME. https://doi.org/10.1115/FuelCell2009-85209
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