New approach to prepare Pt-based hydrogen diffusion anodes tolerant to CO for polymer electrolyte membrane fuel cells

A new approach to prepare Pt-based hydrogen diffusion anodes for PEMFCs based on galvanostatic pulsed electrodeposition is demonstrated to be a reliable alternative to the conventional electrode preparation methods. The performance of the PtRu electrodeposited anodes depends on the electrodeposition parameters such as the peak current, on time, off time, and the total charge applied. The peak current density and the relaxation time are crucial in the control of electrode performance. Electrodes prepared using a cathodic peak current of 0.400 A cm−2, a duty cycle of 5.66% and a charge density of 6 C cm−2 demonstrate high catalytic performance towards hydrogen oxidation.