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Current-Voltage Relationship Considering Electrode Degradation Using Sm-Doped Ceria Electrolytes in SOFCs

机译:考虑Sf掺杂二氧化铈电解质在SOFC中的电极降解的电流-电压关系

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Numerous efforts have been made to solve the basic transport equation that describes a solid-oxide fuel cell (SOFC) with mixed ionic and electronic conductors (MIECs). Classically, the open circuit voltage (OCV) is calculated with Wagner's equation. The current (Ⅰ) - voltage (Ⅴ) relationship is calculated using the model of Choudhury and Patterson. The Riess model is the most famous for accounting for polarization voltage losses using Sm-doped ceria electrolyte (SDC). Furthermore, the model of Wachsman is used without the constant field approximation. However, every electrode degrades with time. Thus, an Ⅰ-Ⅴ calculation considering electrode degradation using SDC electrolytes is described in this report. This model is successful in treating electrode degradation with time. However, the OCV should change with time using this model, though it remains unchanged experimentally.
机译:为了解决描述具有混合离子和电子导体(MIEC)的固体氧化物燃料电池(SOFC)的基本运输方程式,已经做出了许多努力。传统上,开路电压(OCV)是根据Wagner方程计算的。使用Choudhury和Patterson模型计算电流(Ⅰ)-电压(Ⅴ)的关系。 Riess模型因使用Sm掺杂的二氧化铈电解质(SDC)解决极化电压损失而闻名。此外,使用Wachsman模型时无需采用恒定场近似。但是,每个电极都会随着时间而退化。因此,本报告中介绍了考虑使用SDC电解质进行电极降解的Ⅰ-Ⅴ计算。该模型成功地治疗了电极随时间的退化。但是,使用此模型的OCV应该随时间而变化,尽管它在实验上保持不变。

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