Semi-interpenetrating Network Membrane from Polyethyleneimine-Epoxy Resin and Polybenzimidazole for HT-PEM Fuel Cells

Figure 6

Variation of proton conductivity of PA-doped PEI-ER(1 : 1)/PBI membrane and PA-doped PEI-ER(1 : 2)/PBI membrane at 140°C in anhydrous condition with time.