Proton-conducting fuel cells operating on hydrogen, ammonia and hydrazine at intermediate temperatures
MetadataShow full item record
Anode-supported proton-conducting fuel cell with BaZr0.1Ce0.7Y0.2O3-d (BZCY) electrolyte and Ba0.5Sr0.5Co0.8Fe0.2O3-d (BSCF) cathode was fabricated. Peak power densities of ~420 and 135 mW/cm2 were achieved, respectively, at 700 and 450 °C for a cell with 35 µm thick electrolyte operating on hydrogen fuel. The endothermic nature of the ammonia decomposition reaction, however, resulted in cell temperature 30-65 °C lower than the furnace when operating on ammonia. Accounting the cooling effect, comparable power density was achieved for the cell operating on ammonia and hydrogen at high temperature. At reduced temperature, the cell demonstrated worse performance when operating on ammonia than on hydrogen due to the poor activity of the anode towards NH3 catalytic decomposition. By applying on-line catalytic decomposition products of N2H4 as the fuel, similar cell performance to that with NH3 fuel was also observed. © 2009 Professor T. Nejat Veziroglu.
Showing items related by title, author, creator and subject.
Hydrazine as efficient fuel for low-temperature SOFC through ex-situ catalytic decomposition with high selectivity toward hydrogenSong, J.; Ran, R.; Shao, Zongping (2010)Hydrazine is a promising fuel for portable fuel cells because it is a liquid, it is carbon free and it has a high energy density. In this work, hydrazine was investigated as an efficient fuel for low temperature solid-oxide ...
Ammonia-mediated suppression of coke formation in direct-methane solid oxide fuel cells with nickel-based anodesWang, Wei; Ran, R.; Su, C.; Guo, Y.; Farrusseng, D.; Shao, Zongping (2013)In this study, we report a novel approach for suppressing coke formation in direct-methane solid oxide fuel cells (SOFCs) with a conventional nickel cermet anode by simply adding ammonia to the fuel gas. Because ammonia ...
Shao, Zongping; Haile, S. (2010)© 2011 Nature Publishing Group, a division of Macmillan Publishers Limited and published by World Scientific Publishing Co. under licence. All rights reserved.Fuel cells directly and efficiently convert chemical energy ...