Issue 11, 2021

Controllable growth of graphdiyne layered nanosheets for high-performance water oxidation

Abstract

Developing highly active, stable and low-cost electrocatalysts capable of an efficient oxygen evolution reaction (OER) is urgent and challenging. Here we report a facile and general strategy for synthesizing a noble-metal-free electrocatalyst consisting of graphdiyne (GDY)-encapsulated cerium/nickel layered double-hydroxide nanosheets (CeNiLDH@GDY) with a remarkable OER performance. Experimental results demonstrate that the remarkable synergistic effects among different components in the catalyst confer to the catalyst great advantages for combining activity and stability towards an excellent OER performance. The optimal electrocatalyst (Ce0.6Ni0.4LDH@GDY) shows excellent OER performances with a small overpotential of 283 mV to reach 10 mA cm−2 and a high long-term stability over 60 h at around 15 mA cm−2 with almost no decrease in current density. Our results show that the in situ growth of graphdiyne on the LDH surface can form an ideal interface structure leading to an increase in the active surface area and the number of active sites, promoting the charge transfer behavior, protecting the catalyst from corrosion, and consequently enhancing the catalytic performances. This work provides a general method for the design and fabrication of highly active and stable electrocatalysts with desired active site structures for water splitting.

Graphical abstract: Controllable growth of graphdiyne layered nanosheets for high-performance water oxidation

Supplementary files

Article information

Article type
Research Article
Submitted
25 Jan 2021
Accepted
23 Mrz 2021
First published
24 Mrz 2021

Mater. Chem. Front., 2021,5, 4153-4159

Controllable growth of graphdiyne layered nanosheets for high-performance water oxidation

S. Zhao, Y. Xue, Z. Wang, Z. Zheng, X. Luan, Y. Gao and Y. Li, Mater. Chem. Front., 2021, 5, 4153 DOI: 10.1039/D1QM00132A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements