文献类型：期刊文献

英文题名：0.09 wt.% Ru Enables Robust Bifunctional Water Splitting on Co-N4 Sites

作者：Li, Shiyi[1];Liang, Chen[1];Wang, Keyu[1];Lei, Linfeng[1,2,3];Zhuang, Linzhou[1,2];Xu, Zhi[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[3]Suzhou Lab, Suzhou 215000, Peoples R China

年份：2025

卷号：9

期号：6

外文期刊名：ADVANCED SUSTAINABLE SYSTEMS

收录：;EI(收录号：20251518204799);WOS:【SCI-EXPANDED(收录号:WOS:001459212100001)】；

基金：S.L. and C.L. contributed equally to this work. This work was supported by the research funding provided by the National Key R&D Program of China (Grant No. 2021YFB3801301), the National Natural Science Foundation of China (Grant Nos. 22378119, 22075076, and 22208092), and the Shanghai Pilot Program for Basic Research (22TQ1400100-4).

语种：英文

外文关键词：electrospinning; self-supporting carbon nanofiber; synergistic effect; trace Ru doping; water electrolysis

摘要：The development of high-performance bifunctional electrocatalysts for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is crucial for efficient and cost-effective water splitting in sustainable hydrogen production. A significant challenge in this area is engineering active sites that maintain robust stability and high activity under the varying electrochemical conditions encountered in both alkaline and acidic media. This study presents Co80Ru1-NCNFs, an advanced bifunctional electrocatalyst that showcases a self-supported carbon nanofiber membrane with uniformly dispersed Ru-modified Co-N4 active sites, excelling in both OER and HER. The trace incorporation of Ru (0.09 wt%) significantly enhances catalytic activity and stability through synergistic Co/Ru interactions. Co80Ru1-NCNFs demonstrate promising OER performance in 1.0 m KOH, along with remarkable HER activity in both alkaline and acidic conditions. Density functional theory (DFT) calculations reveal that Ru incorporation optimizes the adsorption energies of reaction intermediates on the Co-N4 active sites, thereby improving reaction kinetics. This work provides critical insights for the design and development of efficient and stable bifunctional electrocatalysts for sustainable energy conversion.