Perforated Porous Transport Layer

Lower oxygen saturation

Perforation disrupts the isolation belt, creating high-priority oxygen pathways that enhance electrolysis performance.

Li, Qingyu · Bao, Cheng · Jiang, Zeyi · Xin-Xin, Zhang · Tiexin, Ding · Fang, Chuan · Ouyang, Minggao

eTransportation 2023

Advantages

Perforation probabilistically destroys the ‘isolation belt’, forming a high-priority transport path and reducing oxygen saturation

At unchanged PTL porosity, reducing fiber diameter near the CL significantly reduces local oxygen saturation

Pressure variation is consistent with maximum throat width of the oxygen transport path, revealing capillary pressure law