Abstract
Metal-supported SOFCs with power densities above 700 mW/cm2 at 750oC were fabricated by atmospheric plasma spraying, which can be readily automated and scaled for larger cell areas and production volumes, with no cell sintering requirement. Porous stainless steel substrates were dip-coated to protect against oxidation and chromium loss, followed by fabrication of the functional layers. Preliminary performance in hydrogen was found to be stable for 200 hours, with longer durability tests ongoing. Cells with modified anodes can achieve performances close to those of standard cells operating in hydrogen, with no evidence of coking in TGA methane experiments. Fabrication of anodes for hydrocarbon fuels and the results of scaling up from button cells to 5cm x 5cm cells are discussed.
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