Abstract
Iron nanoparticles (Fe 2O 3) were added to NiO/gadolinium-doped CeO 2 (GDC) anode supported solid oxide fuel cell (SOFC) for the direct methane–water fuel operation. The cell was co-sintered at 1400 °C, and the anode porosity is 31.8%. The main size corresponding to peak volume is around 1.5 μm. When steam and methane directly fed to the cell, the power density is about 0.57 W cm −2 at 650 °C. It is the familiar performance for H 2 operation (4 times of flow rate) with same fuel utilization. Compare with the testing temperature of 600 and 650 °C, there is almost no carbon fiber deposition at 700 °C with steam/methane (S/C) of 5. At the same time, fuel operation of high value of S/C (=3.3) resulted in fiber-like deposition and degradation of power performance based on loading test results.
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