377357 Nickel-Based Anode with Microstructured MoO2 Internal Reformer for Liquid Hydrocarbon-Fueled SOFCs

Tuesday, November 18, 2014: 9:20 AM
M301 (Marriott Marquis Atlanta)
Byeong Wan Kwon and Su Ha, The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA

The present paper describes the fabrication of a bilayer structured solid oxide fuel cell (SOFC). Its anode consisting of an internal MoO2-based micro-reformer in the form of a porous thin film deposited over a Ni-based anode. Cell performance was measured by directly feeding a mixture of n-dodecane and air at different O2/C ratios to the anode at 750oC. Our findings show that the bilayer structured SOFC operating at an O2/C ratio of 0.64 leads to the highest initial cell performance with a maximum power density output > 4 W/cm2. At a constant voltage of 0.7 V using an O2/C ratio of 0.64, the bilayer structured SOFC showed a gradual increase in power density output over the first 2 h, followed by a stable output of 3.6 W/cm2 for the next 10 h. The tested cell showed no indication of coking. When a conventional Ni-based SOFC, without the internal micro-reformer, was operated under similar conditions, its initial performance and long-term stability were found to be significantly lower than that of the bilayer structured SOFC. Hence, the present work demonstrates that a Ni-based SOFC with an integrated MoO2 micro-reformer can effectively operate when fed directly with n-dodecane without an external reformer. These results open up new opportunities for efficiently generating electrical power from both existing transportation fuels and next generation biomass-derived liquid fuels using SOFCs with an integrated MoO2 micro-reformer.

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See more of this Session: Unconventionals: Hydrogen and Fuel Cells
See more of this Group/Topical: Fuels and Petrochemicals Division