Hierarchical macro-mesoporous electrocatalysts with dual-active sites of Ru single atoms and monodispersed Ru–Mo nanoclusters for efficient hydrogen evolution

Ni，Liwen; Zhang，Zhen; Zhao，Zhiliang; Li，Hui

2022-12-01

10.1016/j.mtchem.2022.101046

Materials Today Chemistry   Impact Factor & Quartile

2468-5194

2468-5194

Rationally designing high-performance electrocatalysts with high density and multiactive sites is an effective strategy to accelerate the alkaline hydrogen evolution reaction (HER) kinetics, yet it remains challenging. Herein, a catalyst comprising numerous Ru–Mo-based single atoms and subnanoclusters incorporated into a hierarchical macro-mesoporous carbon framework with a P-doped skeleton (Ru–Mo/PC) was successfully developed via a simple template-assisted pyrolysis method. Spherical aberration correction electron microscopy and X-ray absorption fine structure measurements revealed that the dual-active sites consisted of Ru–C single atoms and ultrasmall Ru–Mo nanoclusters (mean diameter of 0.94 nm). In particular, the as-constructed RuMo/PC catalyst exhibited a high activity towards the HER, requiring an overpotential of only 17.9 mV at 10 mA/cm, which outperformed a commercial Pt/C catalyst in alkaline media. Electrochemical performance results also indicated that introducing moderate Mo species played a crucial role in further boosting the HER activity compared to Ru/PC. The present work provides a step forward in designing efficient and stable catalysts with high-density, atomically dispersed active sites for hydrogen production.

Hierarchical macro-mesoporous structure Hydrogen evolution reaction Ruthenium Single-atom catalyst Sub-nanocluster

EI ; SCI

English

First ; Corresponding

National Key Research and Development Program of China[2021YFB4000200];

Chemistry ; Materials Science

Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary

WOS:000932034800005

ELSEVIER SCI LTD

20223112524833

Aberrations ; Atoms ; Electrocatalysts ; Electrolysis ; Hydrogen production ; Nanoclusters ; Reaction kinetics ; Ruthenium ; X ray absorption

Gas Fuels:522 ; Precious Metals:547.1 ; Electromagnetic Waves:711 ; Nanotechnology:761 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Atomic and Molecular Physics:931.3 ; Solid State Physics:933

2-s2.0-85135373448

Scopus

Department of Materials Science and Engineering,Shenzhen Key Laboratory of Hydrogen Energy,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Ni，Liwen,Zhang，Zhen,Zhao，Zhiliang,等. Hierarchical macro-mesoporous electrocatalysts with dual-active sites of Ru single atoms and monodispersed Ru–Mo nanoclusters for efficient hydrogen evolution[J]. Materials Today Chemistry,2022,26.

Ni，Liwen,Zhang，Zhen,Zhao，Zhiliang,&Li，Hui.(2022).Hierarchical macro-mesoporous electrocatalysts with dual-active sites of Ru single atoms and monodispersed Ru–Mo nanoclusters for efficient hydrogen evolution.Materials Today Chemistry,26.

Ni，Liwen,et al."Hierarchical macro-mesoporous electrocatalysts with dual-active sites of Ru single atoms and monodispersed Ru–Mo nanoclusters for efficient hydrogen evolution".Materials Today Chemistry 26(2022).