Researchers reveal a powerful platform for studying high-entropy alloy electrocatalysis tohoku_univ NatureComms
We developed an experimental electrocatalysis study platform that enables the synthesis of well-defined single-crystal HEA model catalyst surfaces as well as typical electrocatalysis of the resulting Pt/Cr-Mn-Fe-Co-Ni HEA system was investigated through atomic-level evaluations of the surfaces. Consequently, well-controlled single-crystal Pt/Cr-Mn-Fe-Co-Ni surfaces were successfully vacuum-synthesised.
By considering the atomic radii, the estimated mass thickness of 0.3 nm was calibrated to be one-monolayer thick. Following a 10 ML-thick Cantor alloy constituent was deposited on the cleaned surface of Pt at 300 K, the samples were annealed under UHV at 773 K for 30 min. Then, a 4 ML-thick Pt layer was deposited on the pre-deposited layer at 300 K and annealed at 623 K. The synthesised samples were designated as Pt/Cr-Mn-Fe-Co-Ni/Pt.
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