High performance gas diffusion layer to enhance the performanceof polymer electrolyte fuel cells under low humidity

涂覆有疏水微孔层（MPL）的气体扩散层（GDL）已被普遍用于改善聚合物电解质燃料电池（PEFC）的水管理性能。在本研究中，开发了一种新型的亲水和疏水的双重MPL涂层的GDL，以提高PEFC的性能，在不加湿的阴极。亲水层有效地保持膜湿度。亲水层和基底之间的疏水中间层防止亲水层中的水的去除。

Gas diffusion layers (GDLs) coated with a hydrophobic microporous layer (MPL) have been commonly used to improve the water management property of polymer electrolyte fuel cells (PEFCs). In the present study, a novel hydrophilic and hydrophobic double MPL coated GDL was developed to enhance the PEFC performance under no-humidification at the cathode. The hydrophilic layer is effective to conserve membrane humidity. The hydrophobic intermediate layer between the hydrophilic layer and the substrate prevents the removal of water in the hydrophilic layer.