Assessing Utilization Boundaries for Pt-Based Catalysts in an Operating Proton-Exchange Membrane Fuel Cell - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue ACS Applied Energy Materials Année : 2023

Assessing Utilization Boundaries for Pt-Based Catalysts in an Operating Proton-Exchange Membrane Fuel Cell

Harriet Burdett
  • Fonction : Auteur
Jonathan Sharman
  • Fonction : Auteur

Résumé

Octahedra (oh) PtNiX/C catalysts are notable cathode catalysts for proton-exchange membrane fuel cells due to their exceptional oxygen reduction reaction activity. Here, we investigate the degradation of oh-PtNiIr catalysts under fuel-cell conditions using operando X-ray diffraction (XRD). Employing two accelerated stress tests with different lower potential limits and XRD-coupled cyclic voltammetry on benchmark Pt and oh-PtNiIr catalysts, we find that dissolution and degradation are proportional to the extent of reduction, independent of the catalyst’s nature. Our method identifies the optimal potential range for Pt-based catalysts to minimize degradation without lengthy stress tests.
Fichier principal
Vignette du fichier
Author_version_Ronovsky.pdf (1.11 Mo) Télécharger le fichier
Author_version_Ronovsky_SI.pdf (643.6 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Licence : CC BY NC ND - Paternité - Pas d'utilisation commerciale - Pas de modification
Licence : CC BY NC ND - Paternité - Pas d'utilisation commerciale - Pas de modification

Dates et versions

hal-04538444 , version 1 (09-04-2024)

Identifiants

Citer

Michal Ronovsky, Lujin Pan, Malte Klingenhof, Isaac Martens, Lukas Fusek, et al.. Assessing Utilization Boundaries for Pt-Based Catalysts in an Operating Proton-Exchange Membrane Fuel Cell. ACS Applied Energy Materials, 2023, 6 (17), pp.8660-8665. ⟨10.1021/acsaem.3c01243⟩. ⟨hal-04538444⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More