Browsing by Author "Hong-Yan Chen"
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- Covalent organic framework assisted low-content ultrafine ru on porous N-doped carbon for efficient hydrogen evolution reactionPublication . Kong-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(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.