The object of this study is the manufacturing processes and fluorinated ethylene propylene (FEP) contents on the cell performance of the proton exchange membrane fuel cell (PEMFC). These results are useful for optimizing gas diffusion layer (GDL) fabrication processes and the operating conditions of the PEMFC. A traditional GDL with a micro porous layer (MPL) can enhance the water management ability. For the case of the one-stage GDL manufacturing process, carbon paper with an FEP content of 10 wt% has the best fuel cell performance and limiting current density. Besides, in the two-stage GDL fabrication process, when the cathode fuel is air, carbon paper with the same 10 wt% FEP content can delay the occurrence of limiting current density. The types of carbon black have remarkable influences on water management capabilities. It is noted that the XC-72R carbon powder has a relatively appropriate pore volume to have enough water to keep the membrane moist and avoid water flooding. The higher the gas humidification temperature, the faster the electrochemical reaction rate. But when the operating current density is high, it will generate too much water, resulting in water flooding and a decrease in the PEMFC performance. Therefore, when the cathode fuel is air and the inlet humidification temperature is 80°C for the anode and 50°C for the cathode, the limiting current density can be effectively extended to maintain the cell performance.

中文翻译：

---

新型气体扩散层中氟化乙烯丙烯含量对质子交换膜燃料电池电池性能的影响

本研究的对象是制造工艺和氟化乙烯丙烯 (FEP) 含量对质子交换膜燃料电池 (PEMFC) 电池性能的影响。这些结果可用于优化气体扩散层 (GDL) 制造工艺和 PEMFC 的操作条件。具有微孔层 (MPL) 的传统 GDL 可以增强水管理能力。对于一步 GDL 制造工艺的情况，FEP 含量为 10 wt% 的复写纸具有最佳的燃料电池性能和极限电流密度。此外，在两阶段 GDL 制造过程中，当阴极燃料为空气时，相同 10 wt% FEP 含量的碳纸可以延缓极限电流密度的发生。炭黑的种类对水资源管理能力有显着影响。需要注意的是，XC-72R碳粉的孔容比较合适，有足够的水分来保持膜的湿润，避免水淹。气体加湿温度越高，电化学反应速度越快。但是当工作电流密度高时，会产生过多的水，导致水淹，PEMFC性能下降。因此，当阴极燃料为空气且入口加湿温度为阳极80℃、阴极50℃时，可有效延长极限电流密度以维持电池性能。但是当工作电流密度高时，会产生过多的水，导致水淹，PEMFC性能下降。因此，当阴极燃料为空气且入口加湿温度为阳极80℃、阴极50℃时，可有效延长极限电流密度以维持电池性能。但是当工作电流密度高时，会产生过多的水，导致水淹，PEMFC性能下降。因此，当阴极燃料为空气且入口加湿温度为阳极80℃、阴极50℃时，可有效延长极限电流密度以维持电池性能。