Figure 7
Electrochemical impedance spectroscopy (EIS) measurements of prism-patterned MEAs with the same strain (~0.5) and a conventional MEA at 0.6 V vs. a reversible hydrogen electrode (a) and at 1.6 A cm−2 (b). (c) Equivalent circuit of the PEMFC (L1 = inductance of the electric wire, R1 = internal membrane resistance, R3 (2) = charge transfer resistance of the cathode (anode), CPE2 (1) = constant phase element of the cathode (anode), and W1 = Warburg impedance).
