The invention relates to the technical field of fuel cells, in particular to a membrane electrode, a fuel cell and a vehicle. The membrane electrode comprises a gas diffusion layer and a catalyst layer, the gas diffusion layer comprises a microporous layer and a substrate layer, and the microporous layer is located between the catalyst layer and the substrate layer; the microporous layer comprises a hydrophilic part and a hydrophobic part, and the hydrophilic part is distributed according to a preset position. The microporous layer of the hydrophilic part is additionally arranged, the hydrophilic part can absorb water from the catalyst layer more easily, and the hydrophobic diffusion layer still has considerable hydrophobicity, so that the water cannot be gathered in the diffusion layer; on the basis of ensuring the hydrophobic performance of the gas diffusion layer on the whole, the gas diffusion layer performs hydrophilic treatment on part of the region, so that the water management in the membrane electrode is optimized, the membrane electrode is prevented from being flooded, and the performance of the fuel cell is improved.
本发明涉及燃料电池技术领域,具体涉及一种膜电极、燃料电池以及车辆,所述膜电极包括气体扩散层和催化层,所述气体扩散层包括微孔层和基底层,所述微孔层位于催化层与基底层之间;所述微孔层包括亲水部分与疏水部分,所述亲水部分按照预设位置分布;本发明通过增设亲水部分的微孔层,亲水部分会更容易吸收来自催化层中的水,而疏水使扩散层仍然具有相当的疏水性,不会造成水分在扩散层的聚集;气体扩散层整体上在保证气体扩散层疏水性能基础上对部分区域进行了亲水处理,优化膜电极内部的水管理,防止膜电极发生水淹,提高燃料电池性能。
Membrane electrode, fuel cell and vehicle
一种膜电极、燃料电池以及车辆
2021-12-10
Patent
Electronic Resource
Chinese
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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