Hydrophilic and Hydrophobic Microporous Layer Coated Gas Diffusion Layer for Enhancing PEFC Performance
Hydrophilic and Hydrophobic Microporous Layer Coated Gas Diffusion Layer for Enhancing PEFC Performance
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亲水和疏水微孔层涂覆的气体扩散层可增强 PEFC 性能
DOI：
10.1149/10408.0117ecst
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Tatsumi Kitahara
中科院分区：
文献类型：
--
作者：
Peng WANG;Hironori Nakajima;Tatsumi Kitahara
疏水性微孔层（MPL）涂覆的气体扩散层（GDL）通常用于改善聚合物电解质燃料电池（PEFC）的水管理性能。设计用于防止膜电极组件 (MEA) 在低湿度条件下脱水的 MPL 涂层 GDL 在减少高湿度条件下的溢流方面通常较差。因此，开发 MPL 涂层 GDL 以增强 PEFC 在低湿度和高湿度条件下的性能至关重要。克服纯疏水性MPL缺陷的一种方法是制造双层和三层MPL，其中在疏水性MPL上涂覆薄薄的亲水层。另一种方法是含有亲水性碳纳米管（CNT）的疏水性MPL。这两种方法都可以有效地保持膜湿度并减少高湿度条件下的水淹。
The hydrophobic microporous layer (MPL) coated gas diffusion layers (GDLs) have been commonly used to improve water management properties of polymer electrolyte fuel cells (PEFCs). An MPL coated GDL designed to prevent dehydration of the membrane electrode assembly (MEA) under low humidity conditions is generally inferior at reducing flooding under high humidity conditions. Thus, developing an MPL coated GDL to enhance the PEFC performance under low and high humidity conditions is crucial. One method to overcome the defects of pure hydrophobic MPL is to make double and triple MPLs, in which a thin hydrophilic layer is coated on the hydrophobic MPL. Another method is a hydrophobic MPL containing hydrophilic carbon nanotubes (CNTs). Both methods effectively conserve membrane humidity and reduce flooding under high humidity conditions.