Enhanced Water Management in PEMFCs: Perforated Catalyst Layer and Microporous Layers.,ChemSusChem

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Enhanced Water Management in PEMFCs: Perforated Catalyst Layer and Microporous Layers.
ChemSusChem ( IF 7.5 ) Pub Date : 2020-04-01 , DOI: 10.1002/cssc.202000542
Arezou Mohseninia ₁ , Dena Kartouzian ₁ , Robert Schlumberger _{1,

2} , Henning Markötter ₃ , Florian Wilhelm ₁ , Joachim Scholta ₁ , Ingo Manke ₃

Affiliation

An experimental in situ study was performed to investigate the effects of the catalyst layer (CL) and cathode microporous layer (MPL_c) perforation on the water management and performance of polymer electrolyte membrane fuel cells (PEMFCs). Polymeric pore formers were utilized to produce perforated CL and MPL structures. High‐resolution neutron tomography was employed to visualize the liquid water content and distribution within different components of the cell under channel and land regions. The results revealed that at humid conditions, the perforated layers enhanced the liquid water transport under the channel regions. Moreover, at high current densities, the performance was improved for the cells with perforated layers compared to a baseline cell with non‐perforated layers, owing to reduced mass transport losses.

中文翻译：

PEMFC中增强的水管理：穿孔的催化剂层和微孔层。

进行了实验性原位研究以研究催化剂层（CL）和阴极微孔层（MPL _c）对聚合物电解质膜燃料电池（PEMFC）的水管理和性能进行穿孔。聚合物成孔剂用于生产穿孔的CL和MPL结构。高分辨率中子层析成像技术被用于可视化通道和陆地区域下电池不同成分内的液态水含量和分布。结果表明，在潮湿条件下，多孔层增强了通道区域下液态水的输送。而且，在高电流密度下，由于减少了传质损失，具有穿孔层的电池的性能比具有非穿孔层的基准电池要好。

更新日期：2020-04-01

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