An additional layer in an anode support for internal reforming of methane for solid oxide fuel cells |
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Authors: | Young Min Park Haekyoung Kim |
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Affiliation: | 1. Fuel Cell Project, Research Institute of Industrial Science and Technology, Pohang 790-330, Republic of Korea;2. School of Materials Science & Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea |
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Abstract: | Anode supported solid oxide fuel cells (SOFCs) have been extensively investigated for their ease of fabrication, robustness, and high electrochemical performance. SOFCs offer a greater flexibility in fuel choice, such as methane, ethanol or hydrocarbon fuels, which may be supplied directly on the anode. In this study, SOFCs with an additional Ni–Fe layer on a Ni–YSZ support are fabricated with process variables and characterized for a methane fuel application. The addition of Ni–Fe onto the anode supports exhibits an increase in performance when methane fuel is supplied. SOFC with a Ni–Fe layer, sintered at 1000 °C and fabricated using a 20 wt% pore former, exhibits the highest value of 0.94 A cm−2 and 0.85 A cm−2 at 0.8 V with hydrogen and methane fuel, respectively. An impedance analysis reveals that SOFCs with an additional Ni–Fe layer has a lower charge transfer resistance than SOFCs without Ni–Fe layer. To obtain the higher fuel cell performance with methane fuel, the porosity and sintering temperature of an additional Ni–Fe layer need to be optimized. |
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Keywords: | Solid oxide fuel cell Anode supported cell Internal reforming Nickel iron alloy Methane |
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