Performance simulation of current/voltage-characteristics for SOFC single cell by means of detailed
Performance simulation of current/voltage-characteristics for SOFC single cell by means of detailed
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DOI：
10.1016/j.jpowsour.2010.10.052
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发表时间：
2011-09
期刊：
影响因子：
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通讯作者：
A. Leonide;Sabine Hansmann;A. Weber;E. Ivers-Tiffée
中科院分区：
文献类型：
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作者：
A. Leonide;Sabine Hansmann;A. Weber;E. Ivers-Tiffée
我们提出了一个零维稳态模型，它精确地预测了阳极支撑的SOFC单电池的电流-电压-特性在很宽的操作条件。不同种类的电极极化电阻分离的实验阻抗数据通过一个详细的等效电路模型，专门为所分析的细胞类型。活化损失由Butler-Volmer方程建模，而来自气体扩散极化的损失贡献由Fick定律计算。阴、阳极交换电流密度的分压和温度依赖关系可用半经验幂律模型方程拟合。阳极交换电流密度的CO和CO2分压依赖性的指数c和d彼此独立地确定。本文介绍了广泛的操作参数的建模结果，以及他们的实验验证。
We present a zero dimensional stationary model which precisely predicts the current–voltage-characteristics of anode supported SOFC single cells over a wide range of operating conditions. The different kinds of electrode polarization resistances are separated from experimental impedance data by means of a detailed equivalent circuit model developed specifically for the analyzed cell type. The activation losses are modeled by the Butler–Volmer equation, whereas the loss contributions from gas diffusion polarizations are calculated from Fick's law. The partial pressure and temperature dependency of the cathodic and anodic exchange current density could be determined by a fit of semi empirical power law model equations. The exponents c and d for the CO and CO2partial pressure dependency of the anodic exchange current density are determined independently of each other. This paper presents the modeling results for a wide range of operation parameters as well as their experimental verification.