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首页> 外文期刊>Ceramic Engineering and Science Proceedings >NUMERICAL CONTINUUM MODELING AND SIMULATION OF MIXED-CONDUCTING THIN FILM AND PATTERNED ELECTRODES
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NUMERICAL CONTINUUM MODELING AND SIMULATION OF MIXED-CONDUCTING THIN FILM AND PATTERNED ELECTRODES

机译：导电薄膜和图案化电极的数值连续建模与仿真

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摘要

The charge and mass transport processes involved in oxygen reduction reactions on a porous mixed-conducting SOFC cathode are complex and difficult to study, making analytical design of porous electrodes difficult. The use of patterned or thin-film electrode configurations is effective to isolate or separate reaction sites or pathways, making it possible to correlate electrochemical performance with electrode geometry, reaction path, or catalytically active sites. We report our recent progress in modeling of thin-film and patterned mixed-conducting electrodes by numerical solution of the continuum electrochemical and transport constitutive equations. This type of modeling allows the effects of multiple processes to be considered, reflecting the complex interdependence of underlying mechanisms. Specifically, we focus on development of multidimensional continuum models for evaluation of triple phase boundary and surface kinetics, sheet resistance effects, electrochemical impedance spectroscopy, and informed design of experiments.
机译：多孔混合导电SOFC阴极上的氧还原反应涉及的电荷和质量传输过程复杂且难以研究，从而使多孔电极的分析设计变得困难。使用图案化或薄膜电极配置可有效地隔离或分离反应位点或路径，从而使电化学性能与电极几何形状，反应路径或催化活性位点相关联成为可能。我们通过连续电化学和运输本构方程的数值解，报告了我们在薄膜和带图案的混合导电电极建模方面的最新进展。这种类型的建模可以考虑多个过程的影响，从而反映了底层机制的复杂相互依赖性。具体来说，我们专注于多维连续体模型的开发，以评估三相边界和表面动力学，薄层电阻效应，电化学阻抗谱以及知情的实验设计。

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