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Concave cubic Pt90Sm10 alloy nanocrystals (NCs) enclosed by high-index {310} facets were constructed by a facile electrochemical method in a choline chloride-urea (ChCl-U)-based deep eutectic solvent (DES). It was demonstrated… Click to show full abstract
Concave cubic Pt90Sm10 alloy nanocrystals (NCs) enclosed by high-index {310} facets were constructed by a facile electrochemical method in a choline chloride-urea (ChCl-U)-based deep eutectic solvent (DES). It was demonstrated that the concave cubic Pt90Sm10 alloy NCs with high-index {310} facets exhibit higher electrocatalytic activity and stability toward ethanol electrooxidation than those of pure concave cubic Pt NCs and commercial Pt/C catalysts because of the synergy of steric and electronic effects. Density functional theory (DFT) calculations indicated that Sm alloyed Pt{310} can significantly decrease the overall ethanol oxidation reaction barriers.
Journal Title: ACS Applied Energy Materials
Year Published: 2019
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