A Double Atomic-Tuned RuBi SAA/Bi@OG Nanostructure with Optimum Charge Redistribution for Efficient Hydrogen Evolution

Xiaole Zhao; Geng Wu; Xusheng Zheng; Peng Jiang; Jun-Dong Yi; Huang Zhou; Xiaoping Gao; Zhen-Qiang Yu; Yuen Wu

doi:10.1002/anie.202300879

A Double Atomic-Tuned RuBi SAA/Bi@OG Nanostructure with Optimum Charge Redistribution for Efficient Hydrogen Evolution

Angew Chem Int Ed Engl. 2023 Mar 13;62(12):e202300879. doi: 10.1002/anie.202300879. Epub 2023 Feb 14.

Authors

Xiaole Zhao^{1

2}, Geng Wu², Xusheng Zheng³, Peng Jiang², Jun-Dong Yi², Huang Zhou², Xiaoping Gao², Zhen-Qiang Yu¹, Yuen Wu^{2

4}

Affiliations

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.

PMID: 36721306
DOI: 10.1002/anie.202300879

Abstract

Charge 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.

Keywords: Alkaline Hydrogen Evolution; Bi Single Atom; Charge Redistribution; Ru Nanoparticle; Synergetic Tuning.

Abstract

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