articleJournal of the American Chemical SocietyNov 12, 2024Closed access

Regulation of Oxide Pathway Mechanism for Sustainable Acidic Water Oxidation

Nankai University · Collaborative Innovation Center of Chemical Science and Engineering Tianjin

PubMed
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Abstract

The advancement of acid-stable oxygen evolution reaction (OER) electrocatalysts is crucial for efficient hydrogen production through proton exchange membrane (PEM) water electrolysis. Unfortunately, the activity of electrocatalysts is constrained by a linear scaling relationship in the adsorbed evolution mechanism, while the lattice-oxygen-mediated mechanism undermines stability. Here, we propose a heterogeneous dual-site oxide pathway mechanism (OPM) that avoids these limitations through direct dioxygen radical coupling. A combination of Lewis acid (Cr) and Ru to form solid solution oxides (CrxRu1–xO2) promotes OH adsorption and shortens the dual-site distance, which facilitates the formation of *O radical…

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