Performance and liquid water distribution in PEFCs with different anisotropic fiber directions of the GDL

▶ Using anisotropic GDL, the effects of carbon fiber direction of GDL on PEM fuel cell performance were investigated. ▶ The efficiency of PEM fuel cell was better when the fiber direction of anisotropic GDL is perpendicular to the channel direction. ▶ PEM fuel cells with perpendicular fibers were more tolerant to flooding than cells with fibers parallel to the channel direction.