Volume 61, Issue 14 e202116867
Research Article

Superlattice in a Ru Superstructure for Enhancing Hydrogen Evolution

Juntao Zhang

Juntao Zhang

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

These authors contributed equally to this work.

Search for more papers by this author
Xinnan Mao

Xinnan Mao

Institute of Functional Nano & Soft Materials, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123 China

These authors contributed equally to this work.

Search for more papers by this author
Suling Wang

Suling Wang

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

Search for more papers by this author
Lingling Liang

Lingling Liang

Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006 China

Search for more papers by this author
Maofeng Cao

Maofeng Cao

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

Search for more papers by this author
Prof. Lu Wang

Corresponding Author

Prof. Lu Wang

Institute of Functional Nano & Soft Materials, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123 China

Search for more papers by this author
Gen Li

Gen Li

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

Search for more papers by this author
Prof. Yong Xu

Corresponding Author

Prof. Yong Xu

Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006 China

Search for more papers by this author
Prof. Xiaoqing Huang

Corresponding Author

Prof. Xiaoqing Huang

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 China

Search for more papers by this author
First published: 12 January 2022
Citations: 94

Graphical Abstract

A facile wet-chemical method for synthesizing two-dimensional Ru multilayered nanosheets with a superlattice is reported and the significance of the superlattice on electrocatalysis is demonstrated. Theoretical calculations reveal that the superlattice between the adjacent Ru layers can induce the strain effect, which leads to the lattice contraction and the weakening of the *H adsorption ability, as a result of improved HER performance.

Abstract

Superlattices are attracting extensive attention due to their unique properties. Nevertheless, the observations of superlattices are limited to those layered structures with weak interlayered interactions, and the effect of the superlattice in metal-based nanostructures on catalysis is unexplored yet. We here report a facile wet-chemical method for synthesizing two-dimensional Ru multilayered nanosheets (Ru MNSs) with a superlattice. Characterizations reveal that the superlattice is formed by stacking Ru layers with twisted angles from 2° to 30°. Owing to the strong synergy between the adjacent layers, Ru MNSs can serve as an efficient catalyst for the alkaline hydrogen evolution reaction (HER). Theoretical calculations reveal that the superlattice can induce the strain effect, which leads to lattice contraction and weak *H adsorption ability, as a result of improved HER performance. This work sheds new light on the utilization of the superlattice on enhancing catalysis in metal-based materials.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the Supporting Information of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.