Phys.org October 11, 2023
Using the Pt metal as the shell material of the catalyst in polymer electrolyte membrane fuel cells not only increases the surface area but also creates an interfacial interaction between the core metal and platinum, which results in enhanced catalytic activity. Researchers in Canada surface doped Pd@Pt nanoparticles with cobalt to further boost their durability and activity. Characterizing the synthesized catalyst with X-ray absorption fine structure at the Pt L3-edge and cobalt K-edges, together with performance tests, revealed information about the effect of the dopants on the catalytic activity of catalysts. The results of the local and electronic structures of the catalysts were correlated with electrocatalytic activity to optimize performance. Cobalt has been found to be simultaneously efficient in enhancing catalytic activity, increasing long-term durability, and reducing the platinum content in the catalysts. According to the researchers their comprehensive approach sheds new light on catalyst behavior and structure, bringing us one step closer to sustainable energy solutions… read more. TECHNICAL ARTICLE
Graphical abstract. Credit: J. Phys. Chem. C 2023, 127, 38, 18843–18854, September 18, 2023Â