Benchmarking of oxygen evolution catalysts on porous nickel supports - Laboratoire de Chimie des Processus Biologiques Accéder directement au contenu
Article Dans Une Revue Joule Année : 2021

Benchmarking of oxygen evolution catalysts on porous nickel supports

Résumé

Active and inexpensive oxygen evolution reaction (OER) electrocatalysts are needed for energy-efficient electrolysis applications. Objective comparison between OER catalysts has been blurred by the use of different supports and methods to evaluate performance. Here, we selected nine highly active transition-metal-based catalysts and described their synthesis, using a porous nickel foam and a new Ni-based dendritic material as the supports. We designed a standardized protocol to characterize and compare the catalysts in terms of structure, activity, density of active sites, and stability. NiFeSe- and CoFeSe-derived oxides showed the highest activities on our dendritic support, with low overpotentials of η100 ≈ 247 mV at 100 mA cm–2 in 1 M KOH. Stability evaluation showed no surface leaching for 8 h of electrolysis. This work highlights the most active anode materials and provides an easy way to increase the geometric current density of a catalyst by tuning the porosity of its support.
Fichier principal
Vignette du fichier
Fontecave Joule2021_main text.pdf (1.62 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03253478 , version 1 (08-06-2021)

Identifiants

Citer

Adèle Peugeot, Charles E Creissen, Dilan Karapinar, Moritz Schreiber, Marc Fontecave, et al.. Benchmarking of oxygen evolution catalysts on porous nickel supports. Joule, 2021, 5 (5), pp.1281-1300. ⟨10.1016/j.joule.2021.03.022⟩. ⟨hal-03253478⟩
269 Consultations
318 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More