Circular use of Pt/C through Pt dissolution from spent PEMFC cathode and direct reproduction of new catalyst with microwave synthesis

Nanoparticulate platinum supported on high surface area carbon (Pt/C) remains the electrocatalyst of choice at cathode low-temperature polymer electrolyte membrane fuel cell (PEMFCs). Recycling Pt/C from spent PEMFC electrodes through environment-friendly and economic processes is industrial significance. Here, we report such a recycling process involving recovery Pt dissolution under mild conditions followed by synthesis using containing bath as source. Prior to recycling, were characterized for physical chemical states nanoparticles (size, agglomeration, adsorbed species, electrochemical area, etc.), owing their influence conditions. electrode was recovered in 1 M HCl catalyst (20 wt% Pt) synthesized reduction dissolved species microwave assisted polyol route ethylene glycol reducing agent. The eliminates steps necessary recover form compound suitable conventional (e.g. H2PtCl6). its structure performance. study may be interest industry, which relies primary sources demand.