Affiliation:
1. College of Chemistry and Environmental Engineering Institute of Low-dimensional Materials Genome Initiative Shenzhen University Shenzhen 518071 China
2. School of Chemistry and Materials Science University of Science and Technology of China Hefei 230026 China
3. National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China
4. Dalian National Laboratory for Clean Energy Dalian 116023 China
Abstract
AbstractCharge redistribution on surface of Ru nanoparticle can significantly affect electrocatalytic HER activity. Herein, a double atomic‐tuned RuBi SAA/Bi@OG nanostructure that features RuBi single‐atom alloy nanoparticle supported by Bi−O single‐site‐doped graphene was successfully developed by one‐step pyrolysis method. The alloyed Bi single atom and adjacent Bi−O single site in RuBi SAA/Bi@OG can synergistically manipulate electron transfer on Ru surface leading to optimum charge redistribution. Thus, the resulting RuBi SAA/Bi@OG exhibits superior alkaline HER activity. Its mass activity is up to 65000 mA mg−1 at an overpotential of 150 mV, which is 72.2 times as much as that of commercial Pt/C. DFT calculations reveal that the RuBi SAA/Bi@OG possesses the optimum charge redistribution, which is most beneficial to strengthen adsorption of water and weaken hydrogen‐adsorption free energy in HER process. This double atomic‐tuned strategy on surface charge redistribution of Ru nanoparticle opens a new way to develop highly efficient electrocatalysts.
Funder
Ministry of Science and Technology of the People's Republic of China
National Natural Science Foundation of China
Natural Science Foundation of Anhui Province
Key Technologies Research and Development Program of Anhui Province
Postdoctoral Research Foundation of China
Subject
General Chemistry,Catalysis
Cited by
18 articles.
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