Simulations of PEFC cathodes: an effectiveness factor approach
Simulations of PEFC cathodes: an effectiveness factor approach
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DOI：
10.1023/a:1018478324564
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发表时间：
1997-09-01
影响因子：
2.9
通讯作者：
Durand, R
中科院分区：
文献类型：
--
作者：
Gloaguen, F;Durand, R
讨论了描述PEFC阴极活性层工作机理的关键参数。将宏观均质模型和团聚模型应用于不同类型的氧阴极。从模拟中可以看出，即使在薄于10 μ m的真实的活性层中，也必须存在气孔。更合适的模型是凝聚模型。一个有效性因素的方法允许确定的主要因素限制氧阴极的性能。从模拟中得到了进一步提高催化剂利用率的实际解决方案。
The key parameters describing the operation mechanism of an active layer of PEFC cathodes were discussed. The macrohomogeneous and the agglomerate model were applied to different kinds of oxygen cathodes. From the simulations, it appears that gas pores must exist, even within real active layers thinner than 10 mu m. The more appropriate model is the agglomerate model. An effectiveness factor approach allowed determination of the main factors limiting the oxygen cathode performance. Actual solutions for further improvements of the catalyst utilization were derived from simulations.