“…From Figure , the β values were 6.38 × 10 4 S s/cm 3 for (K/PA/S) 3 , 1.91 × 10 4 S s/cm 3 for (K/PA/S) 3 -f, and 3.48 × 10 4 S s/cm 3 for (K/PA/S) 3 -50. Additionally, the reported β values were 3.1 × 10 4 S s/cm 3 for SPVA/MoS 2 -0.3%, 6.9 × 10 4 S s/cm 3 for Nafion/CAW, 2.25 × 10 4 S s/cm 3 for N-PVA/HWP20, 0.95 × 10 4 S s/cm 3 for commercial Nafion-117, 0.87 × 10 4 S s/cm 3 for (PDDA/PM)SF 2 , 4.17 × 10 4 S s/cm 3 for SPEEK/PVA, 5.06 × 10 4 S s/cm 3 for PEMG-0.3, and 9.84 × 10 4 S s/cm 3 for SPP-4 . Although the prepared composite membranes illustrated a higher methanol permeability, these membranes possessed higher β values, resulting from higher proton conductivity.…”