A Sustainable Route to Ruthenium Phosphide (RuP)/Ru Heterostructures with Electron‐Shuttling of Interfacial Ru for Efficient Hydrogen Evolution

Author:

Li Daohao1,Cai Rongsheng2,Zheng Dongyong1,Ren Jun3,Dong Chung‐Li4,Huang Yu‐Cheng4,Haigh Sarah J.2,Liu Xien5,Gong Feilong6,Liu Yiming7,Liu Jian8910ORCID,Yang Dongjiang1

Affiliation:

1. State Key Laboratory of Bio‐fibers and Eco‐textiles College of Materials Science and Engineering School of Environmental Science and Engineering Institute of Marine Biobased Materials Qingdao University Qingdao 266071 P. R. China

2. Department of Materials University of Manchester Manchester M13 9PL UK

3. School of Chemical and Environmental Engineering North University of China Taiyuan 030051 P. R. China

4. Department of Physics Tamkang University New Taipei City 25137 Taiwan

5. State Key Laboratory Base of Eco‐Chemical Engineering College of Chemical Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China

6. Key Laboratory of Surface and Interface Science and Technology of Henan Province College of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou Henan 450001 P. R. China

7. College of Materials Science and Engineering Taiyuan University of Technology Taiyuan 030024 P. R. China

8. Science Center of Energy Material and Chemistry, College of Chemistry and Chemical Engineering Inner Mongolia University Hohhot 010021 P. R. China

9. DICP‐Surrey Joint Centre for Future Materials University of Surrey Guildford Surrey GU2 7XH UK

10. State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China

Abstract

AbstractRuthenium (Ru) is a promising electrocatalyst for the hydrogen evolution reaction (HER), despite suffering from low activity in non‐acidic conditions due to the high kinetic energy barrier of H2O dissociation. Herein, the synthesis of carbon nanosheet‐supported RuP/Ru heterostructures (RuP/Ru@CNS) from a natural polysaccharide is reported and demonstrates its behavior as an effective HER electrocatalyst in non‐acidic conditions. The RuP/Ru@CNS exhibits low overpotential (106 mV at 200 mA·cm−2) in alkaline electrolyte, exceeding most reported Ru‐based electrocatalysts. The electron shuttling between Ru atoms at the RuP/Ru interface results in a lowered energy barrier for H2O dissociation by electron‐deficient Ru atoms in the pure Ru phase, as well as optimized H* adsorption of electron‐gaining Ru atoms in the neighboring RuP. A low H* spillover energy barrier between Ru atoms at the RuP/Ru interface further boosts HER kinetics. This study demonstrates a sustainable method for the fabrication of efficient Ru‐based electrocatalysts and provides a more detailed understanding of interface effects in HER catalysis.

Funder

Engineering and Physical Sciences Research Council

National Natural Science Foundation of China

Publisher

Wiley

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