Design of platinum nanoflower catalyst exhibiting near-ideal local coordination in a complex shape - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Electrochimica Acta Année : 2023

Design of platinum nanoflower catalyst exhibiting near-ideal local coordination in a complex shape

Résumé

Here, we investigate the oxygen reduction reaction activity of near-monocrystalline platinum nanoflowers presenting a low microstrain to decorrelate the contribution of (i) distorted lattice and (ii) high coordination active sites found within the platinum nanoflower pores to the specific activity enhancement. The results are discussed within the framework of previous investigations onto various catalytic nanostructures. We evidenced that the microstrain of the platinum nanoflowers stands out of the trends previously established for defective platinum-based nanostructures, where the activity is driven by lattice distortion. This indicates that (i) 'defective' structures with low lattice distortion, but high variation in coordination number, can be synthesized and (ii) that their specific activity improvement is comparable to the surface distortion approach in liquid electrolyte.
Fichier principal
Vignette du fichier
Ly et al. - HAL.pdf (1.17 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04296408 , version 1 (20-11-2023)

Identifiants

Citer

Alvin Ly, Tristan Asset, Eamonn Murphy, Kaustubh Khedekar, Ying Huang, et al.. Design of platinum nanoflower catalyst exhibiting near-ideal local coordination in a complex shape. Electrochimica Acta, 2023, 469, pp.143282. ⟨10.1016/j.electacta.2023.143282⟩. ⟨hal-04296408⟩
11 Consultations
9 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More