2021年3月11日 · The widely accepted OER mechanism consists of four-electron/proton transfer steps in both acidic and alkaline media [3, 4, 14]. The OER is highly pH-sensitive; under acidic conditions, water molecules (H 2 O) are oxidized, and pairs and oxygen molecules (O 2 ) are released [ 3 , 4 ].

2023年12月1日 · In this review, we provide an overview of recent progress in OER electrocatalysis with a concise focus on computational studies that explicitly accounted for the elementary step of O2 desorption. We highlight the computational and methodological intricacies that led to not considering this step as crucial by earlier OER studies.

2024年4月1日 · The traditional AEM mechanism for OER reaction involves four steps and three intermediate species: *OH, *O, and *OOH. The binding energy of the intermediate species is linearly correlated, forming a volcano-shaped diagram.

2017年1月9日 · The traditional understanding of the OER mechanism on metal oxides involves four concerted proton–electron transfer steps on metal-ion centres at their surface and product oxygen molecules ...

2022年8月18日 · Oxygen evolution reaction (OER) consists of four sequential proton-coupled electron transfer steps, which suffer from sluggish kinetics even on state-of-the-art ruthenium dioxide...

2024年4月15日 · a) Proton–electron transfer steps of the mononuclear oxygen-evolution reaction (OER) mechanism consisting of coupled (CPET) or sequential pathways (SPET); the latter involves the occurrence of decoupled proton (PT) and electron transfer (ET) steps.

For ORR (fuel cell, where the reaction goes backword), the minimum voltage we get throughout these four steps determine the battery voltage. So, the minimum gap between the four intermediate states is the bottleneck (here, from O2(g) to HOO*

2021年9月30日 · Generally, the OER can be described as a four-step process, represented by Reactions 2–5b. These reactions describe generally OER process in which each step can be modified according to the studied catalyst.

2023年7月15日 · We consider all the three distinctive types of OER mechanisms on Ni (M)OOH under alkaline conditions, i.e., AEM, IMOC, and LOM, each of which is composed of four electrochemical steps and one...

This review aims to 1) identify the OER catalytic active site of three mainstream types of NPMCs, that is, non-precious metal oxides/ (oxy)hydroxides, metal-free carbon-based materials, and non-precious metal/carbon composites, 2) analyze the possible degradation mechanisms of the catalytic active sites in alkaline media, and 3) provide insights...