Kong-Gang QuZhi-Fei ChenLi-Hui WangHai-Bo LiSu-Yuan ZengRui LiLi-Jian MengHong-Yan ChenQing-Xia Yao2025-04-032025-04-032025Kong.Gang Qu, Zhi-Fei Chen, Li-Hui Wang, Hai-Bo Li, Su-Yuan Zeng, Rui Li, Li-Jian Meng, Hong-Yan Chen, & Qing-Xia Yao. (2025). Covalent organic framework assisted low-content ultrafine ru on porous N-doped carbon for efficient hydrogen evolution reaction. Rare Met., 44(3), 2094-2102. Springer Nature. https://doi.org/10.1007/s12598- 024-03024-w.1001-05211867-7185http://hdl.handle.net/10400.22/29926(Excerpt) Pt-based materials are the benchmarked catalysts in the cathodic hydrogen evolution reaction (HER) of water splitting; the prohibitive cost and scarcity of Pt immensely impede the commercialization of hydrogen energy. Ru has aroused significant concern because of its Pt-like activity and much lower price. However, it’s still a top priority to minimize the Ru loading and pursue the most superior cost performance. Herein, N-rich covalent organic framework (COF) was employed to assist the preparation of ultrafine Ru, including nanoclusters and single atoms loaded onto porous N-doped carbon by a simple impregnation-pyrolysis process with a low Ru content of 6.60 wt%, exhibiting superior HER activity with mass activity of 21.86 and 11.52 A mg-1 Ru (@100 mV) in alkaline and acidic conditions, separately 14.7 and 2.12 times higher than that of commercial Pt/C.engCovalent organic frameworkUltrafine RuPorous N-dopedHydrogen evolution reactionletter to the editorhttps://doi.org/10.1007/s12598-024-03024-w