Fig. 2: Electrochemical performance and thermal behaviors of the electrolyzer.

The V-t, i-t and T_MEA-t curves under different ξ: a 2, b 4, c 6, and d 8. Commercial MEA with Nafion N115, Pt/C cathode catalyst (0.2 - 0.4 mgPt cm-2), and IrO2 anode catalyst (0.7-1.5 mgIr cm-2).