Tailoring the particle sizes of Pt5Ce alloy nanoparticles for the oxygen reduction reaction

Lanthanide contraction effect on the alkaline hydrogen evolution and oxidation reactions activity in platinum–rare earth nanoalloys

“…On the other hand, research on Pt-rare earth (Pt-RE) nanoalloys as electrocatalysts has considerably increased in recent years. [15][16][17][18][19][20][21][22][23] Indeed, their key structural properties for electrocatalysis, such as the induced compressive strain, might be tuned by means of the lanthanide contraction. 24 Namely, the Pt-RE alloys can present an unusual CaCu 5 -like hexagonal crystalline structure that accommodates the alloying elements of different atomic radius in a different way from face centred cubic (fcc) or hexagonal closed-package (hcp) alloys.…”

Stabilization of Carbon-Supported Platinum–Rare Earth Nanoalloys during Electrochemical Activation

“…If performance, cost, and durability must be improved, one particular focus is on the electrocatalyst activity and long-term durability for the sluggish oxygen reduction reaction (ORR). Platinum–rare earth metal alloys (Pt-REM) have been considered as suitable candidates to satisfy the ORR requirements, and research on carbon-supported Pt-REM nanostructures has considerably increased in recent years. − Notwithstanding, their reported ORR activity is still lower than state-of-the-art carbon-supported PtNi and PtCo nanoalloys. , Therefore, there is a need for a deeper understanding, especially during operation, of the relatively novel Pt-REM/C nanoalloys.…”