Fig. 3: Discharging profiles of the composite electrode and transient performance of cells. | Nature Communications

Fig. 3: Discharging profiles of the composite electrode and transient performance of cells.

From: Multi-functional anodes boost the transient power and durability of proton exchange membrane fuel cells

Fig. 3

a Galvanostatic discharge curves of a WO3 electrode discharged at different current densities measured in the air-capacitor configuration. b Polarization curves and power density of a hybrid cell (with WO3) and a control cell (without WO3) at 30 °C. Hundred percent humidified H2 (stoichiometry = 1.5) and O2 (stoichiometry = 4) were fed to the anodes and cathodes, respectively. c, d Voltages and e, f average P at a time scale of 5, 10, 15, and 20 s of the control cell and the hybrid cell upon switching the current output from 0.05 A cm−2 to different current outputs at 30 and 50 °C.

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