Fig. 3: Electrochemical characterizations of MEAs.
From: The role of oxygen-permeable ionomer for polymer electrolyte fuel cells
a Current–voltage (with closed dots) and current–power density (with open dots) curves of MEAs with Nafion ionomer (black) and HOPI (red) at 353 K and 30, 60, and 90% RH. b Local oxygen transport resistance Rother as a function of RH. c Ohmic resistance of CLs in MEAs. All measurements were conducted twice, and the differences between two measurements were shown as error bars in all figures.
