Analysis and Experiments of Major Parameters in Catalyst Layer Structure Affecting on PEFC Performance
Analysis and Experiments of Major Parameters in Catalyst Layer Structure Affecting on PEFC Performance
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催化剂层结构主要参数对PEFC性能影响的分析与实验
DOI：
10.1149/05002.0415ecst
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
T. Chikahisa
中科院分区：
文献类型：
--
作者：
M. Kobayashi;Y. Tabe;T. Chikahisa
实现电极催化剂层的最佳结构和反应物的有效传输对于减少聚合物电解质膜燃料电池中Pt催化剂的使用是显著有效的。在本文中，我们制作的催化剂涂层膜（CCM）和估计的催化剂层的结构参数，通过观察CCM的扫描电镜。采用凝聚模型计算了电池性能的特征，并将计算结果与实验结果进行了比较，验证了模型的正确性。然后，我们评估的主要参数，如聚合物电解质膜厚度覆盖的碳团聚体上的电池性能的影响，通过模拟，并提出了一个新的概念，有效地减少确定的主要阻力的氧气供应，通过控制聚合物电解质的膜结构。
Achieving the optimum structure of electrode catalyst layer and the efficient transport of the reactants is significantly effective to reduce the usage of Pt catalyst in polymer electrolyte membrane fuel cells. In this paper, we fabricated the catalyst coated membrane (CCM) and estimated structural parameters of the catalyst layer from observation of the CCM by a SEM. The characteristics of the cell performance were calculated using an agglomerate model with the estimated parameters, and the simulation model was validated by comparing the simulated and experimental results. Then, we evaluated the effects of the major parameters such as the polymer electrolyte film thickness covering carbon agglomerates on the cell performance by the simulation, and present a new concept effective for reducing the identified major resistances of oxygen supply by controlling the film structure of polymer electrolyte.