Investigation of Ni-coated-steel-meshes as alternative anode contact material to nickel in an SOFC stack. (29th March 2019)

• Record Type: Journal Article
• Authors: Babelot, C.; Fang, Q.; Blum, L.; Natour, G.
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 16(2019)
• Page Start: 8493
• Page End: 8501
• Publication Date: 2019-03-29
• Subjects: SOFC -- Nickel -- Stack test -- Electron microscopy -- Oxidation -- Materials science; LoCa low-carbon -- SST Stainless steel; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.01.282
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Solid oxide fuel cell is a promising technology to convert renewable energy sources to electricity electrochemically at high efficiencies, thus an important applied research topic worldwide. The in-house developed so-called F-stack-design aims at stationary applications and can achieve a very long lifetime. However, since production costs should be reduced, one research focus lies on finding suitable less expensive materials. Therefore, alternatives for the benchmark Ni-mesh as anode contacting element in the stack were studied. Several types of Ni-coated-steels were tested in a stack. After 3000 h of operation the different anode contact materials are compared with the Ni-mesh in terms of microstructure as well as chemical composition. A discussion of the results is given. Highlights: All anode contact materials degraded similarly. The stainless steel 430 with thin Ni-coating shows the best behavior. The Ni-coating of the low-carbon-steel vanishes. The Ni-coated-steel-meshes are strongly subjected to oxidation and are not suitable.