Analytical modeling of polarizations in a solid oxide fuel cell using biomass syngas product as fuel
Analytical modeling of polarizations in a solid oxide fuel cell using biomass syngas product as fuel
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DOI：
10.1016/j.applthermaleng.2006.10.011
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发表时间：
2007-03
影响因子：
6.4
通讯作者：
T. Aloui;K. Halouani
中科院分区：
文献类型：
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作者：
T. Aloui;K. Halouani
建立了一个分析模型，研究了燃料类型对SOFC极化和性能的影响。我们特别考虑两种类型的燃料：纯氢气和合成气（H2和CO的混合物）由生物质气化产生。该模型基于H2和CO在阳极侧的同时直接氧化，并使用具有适当扩散系数（多孔材料中的二元或混合系数）的粉尘-气体模型来评估浓差极化，并使用Butler-Volmer方程来计算欧姆极化由众所周知的欧姆定律表示时的活化极化。结果表明，当合成气中CO含量为24%时，SOFC的性能比纯H2提高了23%。
An analytical model is developed to study fuel type effect on polarizations and performance of SOFC. We consider especially two types of fuel: pure hydrogen and syngas (mixture of H2and CO) produced by biomass gasification. The proposed model is based on simultaneous direct oxidation of H2and CO at the anode side and uses the dusty-gas model with appropriate diffusion coefficient (binary or mixture coefficient in porous material) to evaluate the concentration polarization and the Butler–Volmer equation to calculate the activation polarization when ohmic polarization is expressed by the well known Ohm’s law. Results analysis show that a fraction of CO of about 24% in syngas improves the performance of SOFC by 23% compared to that obtained by pure H2.