2026-06-28T20:41:00Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/922132024-07-30T00:11:03Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Torrell, Marc author Morata, Alejandro author Kayser González, Paula author Kendal, Michaella author Kendal, Kevin author Tarancon, Albert 2024-01-10T11:12:13Z 2024-01-10T11:12:13Z 2015 Torrell, M., et al. «Performance and Long Term Degradation of 7 W Micro-Tubular Solid Oxide Fuel Cells for Portable Applications». Journal of Power Sources, vol. 285, julio de 2015, pp. 439-48. https://doi.org/10.1016/j.jpowsour.2015.03.030. 0378-7753 10.1016/j.jpowsour.2015.03.030 https://hdl.handle.net/20.500.14352/92213 https://doi.org/10.1016/j.jpowsour.2015.03.030 Micro-tubular SOFCs have shown an astonishing thermal shock resistance, many orders of magnitude larger than planar SOFCs, opening the possibility of being used in portable applications. However, only few studies have been devoted to study the degradation of large-area micro-tubular SOFCs. This work presents microstructural, electrochemical and long term degradation studies of single micro-tubular cells fabricated by high shear extrusion, operating in the intermediate range of temperatures (T∼700 °C). A maximum power of 7 W per cell has been measured in a wide range of fuel utilizations between 10% and 60% at 700 °C. A degradation rate of 360 mW/1000 h (8%) has been observed for cells operated over more than 1500 h under fuel utilizations of 40%. Higher fuel utilizations lead to strong degradations associated to nickel oxidation/reduction processes. Quick thermal cycling with heating ramp rates of 30 °C /min yielded degradation rates of 440 mW/100 cycles (9%). These reasonable values of degradation under continuous and thermal cycling operation approach the requirements for many portable applications including auxiliary power units or consumer electronics opening this typically forbidden market to the SOFC technology. eng Performance and long term degradation of 7 W micro-tubular solid oxide fuel cells for portable applications journal article 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URL https://docta.ucm.es/bitstreams/0d9eefff-b498-45d7-87a8-4c52f056e74c/download File MD5 bccd58624b0953e59cd6febba067f66a 3664728 application/pdf 7_W_micro-tubular_solid.pdf