Abstract
Single-chamber solid oxide fuel cell (SC-SOFC) stacks with different angles between the gas flow direction and the electrode were fabricated and tested in a diluted methane-oxygen mixture. The gas tubes with separated gas vents were used for transmission of the reactant gasses. Experimental results showed that the performance of the two-cell stack at a gas flow angle (θ) of 45° was greatly enhanced compared with that at 0 and 90°. At a furnace temperature of 700 °C and a CH4/O2 ratio of 2, the maximum output power of the anode-first configuration was 154 mW at θ = 45°, which was 51% higher than that obtained at θ = 90°. Additionally, the maximum power of the anode-first stack was higher than that of the cathode-first one at θ = 45°, which was contrary to the results obtained at θ = 90°. The stack with an angled configuration of θ = 45° will generate a more attractive power for portable power applications.
Published Version
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