Inter-relationships between Oxygen Evolution and Iridium Dissolution Mechanisms

Loncar A, Escalera-Lopez D, Cherevko S, Hodnik N (2022)

Publication Type: Journal article, Review article

Publication year: 2022

Journal

Angewandte Chemie International Edition Wiley

Book Volume: 61

Article Number: e202114437

Journal Issue: 14

DOI: 10.1002/anie.202114437

Abstract

The widespread utilization of proton exchange membrane (PEM) electrolyzers currently remains uncertain, as they rely on the use of highly scarce iridium as the only viable catalyst for the oxygen evolution reaction (OER), which is known to present the major energy losses of the process. Understanding the mechanistic origin of the different activities and stabilities of Ir-based catalysts is, therefore, crucial for a scale-up of green hydrogen production. It is known that structure influences the dissolution, which is the main degradation mechanism and shares common intermediates with the OER. In this Minireview, the state-of-the-art understanding of dissolution and its relationship with the structure of different iridium catalysts is gathered and correlated to different mechanisms of the OER. A perspective on future directions of investigation is also given.

Involved external institutions

National Institute of Chemistry / Kemijski Inštitut SI Slovenia (SI) Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE)

How to cite

APA:

Loncar, A., Escalera-Lopez, D., Cherevko, S., & Hodnik, N. (2022). Inter-relationships between Oxygen Evolution and Iridium Dissolution Mechanisms. Angewandte Chemie International Edition, 61(14). https://doi.org/10.1002/anie.202114437

MLA:

Loncar, Anja, et al. "Inter-relationships between Oxygen Evolution and Iridium Dissolution Mechanisms." Angewandte Chemie International Edition 61.14 (2022).

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