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首页> 外文会议>International symposium on solid oxide fuel cells;SOFC-XII >Hydrogen Oxidation Kinetics in Reformate-Fuelled Anode Supported SOFC
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Hydrogen Oxidation Kinetics in Reformate-Fuelled Anode Supported SOFC

机译：重整油料阳极负载的SOFC的氢氧化动力学

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In this study, the reformate operation of solid oxide fuel cells (SOFC) is characterized by electrochemical impedance spectroscopy. The characterization is performed over a broad measuring range of temperature and H/C/O-ratios of the fuel. The kinetic parameters of the electrochemical oxidation of the fuel are obtained directly from impedance measurements performed on full anode-supported SOFCs. This is done by a combined distribution of relaxation times and an equivalent circuit impedance analysis method, which allows a highly resolved identification and deconvolution of each single polarization mechanism contributing to the overall losses of the cell. The evaluated kinetic parameters in reformate are the same as under hydrogen operation. Obviously only hydrogen is directly electrochemically oxidized in reformate-fuelled cells. The higher overall polarization resistance compared to hydrogen operation has to be attributed to the occurrence of an additional process, which is interpreted in this work.
机译：在这项研究中，固体氧化物燃料电池（SOFC）的重整产品运行通过电化学阻抗谱来表征。表征是在很宽的温度和燃料的H / C / O比值测量范围内进行的。燃料电化学氧化的动力学参数直接从在完全阳极支撑的SOFC上进行的阻抗测量中获得。这是通过弛豫时间的分布和等效电路阻抗分析方法的组合来完成的，该方法可以对每个单个极化机制进行高度解析的识别和反卷积，从而有助于电池的整体损耗。在重整产品中评估的动力学参数与在氢气操作下相同。显然，在重整燃料电池中，只有氢被直接电化学氧化。与氢操作相比，更高的总极化电阻必须归因于额外工艺的出现，这在本工作中得到了解释。

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