Interfacial electron redistribution through the Ru-N-Fe bond to stabilize high-valence metal sites for efficient electrocatalytic oxygen evolution

IF 9.1 1区工程技术 Q1 ENERGY & FUELS Renewable Energy Pub Date : 2025-02-12 DOI:10.1016/j.renene.2025.122656

Wei Wang , Yingwei Li , Jia Wang , Rui Xiao , Kuanguan Liu , Xudong Song , Guangsuo Yu , Baojun Ma

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Abstract

The sluggish oxygen evolution reaction (OER) represents a critical bottleneck in renewable energy technologies, such as water electrolysis. Although RuO₂ is the most active material for OER, it suffers from the significant loss in performance due to the over-oxidation of Ru cations. Here, a hybrid FeV oxide/nitride electrocatalyst anchored strategy is creatively proposed to stabilize atomically isolated Ru for outstanding OER activity. The oxidation state of Ru is in high-valence (Ruⁿ⁺, n > 4) and remains stable during the OER process. This is realized by the VO_x leaching and the electrons redistributed through the interfacial Ru-N-Fe bond. Furthermore, a highly reactive Ru and Fe sites can be generated, which synergistically optimize the reaction thermodynamics and kinetics. These crucial findings offer a simple approach to design cost-efficient, highly catalytic heterogeneous system for OER in renewable energy devices.

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界面电子重分配通过Ru-N-Fe键稳定高价金属位，为有效的电催化析氧

缓慢的析氧反应（OER）是水电解等可再生能源技术的关键瓶颈。虽然RuO2是OER中最活跃的材料，但由于Ru离子的过度氧化，它的性能损失很大。本文创造性地提出了一种FeV氧化物/氮化物混合电催化剂锚定策略，以稳定原子分离的Ru，使其具有出色的OER活性。Ru的氧化态为高价态(Run+, n >；4)在OER过程中保持稳定。这是通过VOx浸出和电子通过界面Ru-N-Fe键重新分配来实现的。此外，还可以生成高活性的Ru和Fe位点，从而协同优化反应热力学和动力学。这些重要的发现提供了一个简单的方法来设计成本效益高，高催化多相系统的OER在可再生能源装置。

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来源期刊

Renewable Energy 工程技术-能源与燃料

CiteScore

18.40

自引率

9.20%

发文量

1955

审稿时长

6.6 months

期刊介绍： Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.