Abstract
Solid oxide fuel cells (SOFCs) possess excellent fuel flexibility, which enlarges the field of application of SOFCs. Herein, we report flat-tube SOFCs with double-sided cathodes (DSC). Such structure has inner channels across the anode support of the cell, and thus provide a chamber for the internal reforming of the fuels. Moreover, the symmetric structure and thick anode support of the DSC cells significantly enhances the structural strength of the cell. In this study, hydrogen, ammonia, and humidified hydrocarbons including methane, coke oven gas, and ethanol were supplied to the anode of the flat-tube SOFCs. The cell performance and long-term stability against the kinds of main fuels, the content of water, the temperatures, and the current density were investigated in details. In addition, the catalytic processes of these fuels within the anode were estimated by analyzing the exhaust gases.
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