文献类型：期刊文献

英文题名：Synergistic effect of dual active sites over Ru/α-MoC for accelerating alkaline hydrogen evolution reaction

作者：Fan, Xueliang[1]; Liu, Cong[2]; Wu, Minying[1]; Gao, Boxu[1]; Zheng, Luyao[1]; Zhang, Yahong[1]; Zhang, Hongbin[3]; Gao, Qingsheng[4]; Cao, Xiaoming[2]; Tang, Yi[1]

机构：[1] Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials and Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, China; [2] Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, China; [3] Institute for Preservation of Chinese Ancient Books, Fudan University Library, Fudan University, Shanghai, 200433, China; [4] College of Chemistry and Materials Science, and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, 510632, China

年份：2022

卷号：318

外文期刊名：Applied Catalysis B: Environmental

收录：EI(收录号：20220127818)

语种：英文

外文关键词：Electrocatalysts - Hydrogen

摘要：Developing alkaline hydrogen evolution reaction catalysts with ultra-low overpotential remains a significant challenge. In this paper, a three-dimensional porous Ru/α-MoC has been developed, which features the dual active sites of α-MoC and Ru. The coexistence of ultrafine Ru nanoparticles and Ru single atoms in Ru/α-MoC system is demonstrated by multiple structural characterizations. The fabricated Ru/α-MoC exhibits excellent alkaline HER activity with a low overpotential 25 mV at 10 mA cm?2, outperforming commercial 20% Pt/C (45 mV), and robust electrocatalytic stability at an industrial-scale current density of 400 mA cm?2. Particularly, the turnover frequency value reaches 39.2 s?1 at the overpotential of 100 mV. Experiments and theory investigations demonstrate the electron redistribution at the interface of α-MoC and Ru. The synergistic effect of dual active sites enables the easy cleavage of H-OH bond and the optimal H adsorption energy simultaneously. This work opens up a feasible way to rationally design high-efficient electrocatalysts with dual active sites for typical multistep reactions. ? 2022 Elsevier B.V.