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

IF 9 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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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.