Benchmarking of oxygen evolution catalysts on porous nickel supports

Peugeot, Adele; Creissen, Charles E.; Karapinar, Dilan; Huan Ngoc Tran, H; Schreiber, Moritz; Fontecave, Marc

Abstract

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.

Citation

Peugeot, A., Creissen, C. E., Karapinar, D., Huan Ngoc Tran, H., Schreiber, M., & Fontecave, M. (2021). Benchmarking of oxygen evolution catalysts on porous nickel supports. Joule, 5(5), 1281-1300. https://doi.org/10.1016/j.joule.2021.03.022

• Journal Article Type: Article
• Acceptance Date: Apr 28, 2021
• Online Publication Date: Apr 28, 2021
• Publication Date: May 19, 2021
• Deposit Date: Jun 5, 2023
• Journal: JOULE
• Print ISSN: 2542-4351
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 5
• Issue: 5
• Pages: 1281-1300
• DOI: https://doi.org/10.1016/j.joule.2021.03.022