Issue 46, 2023

CoNi2S4@CoNi-LDH heterojunction grown on SSM as a highly efficient trifunctional catalyst for water-splitting and Zn–air batteries

Abstract

The development of self-supported trifunctional catalysts for Zn–air batteries (ZABs) and efficient water splitting is of great significance. Herein, we have directly sulfurized cobalt nickel-layered double hydroxides (CoNi-LDH) grown in situ on stainless steel mesh (SSM) and successfully obtained CoNi2S4@CoNi-LDH/SSM, which needs only 252 mV to achieve a current density of 10 mA cm−2 for the oxygen evolution reaction (OER), and a 0.74 V half-wave potential for the oxygen reduction reaction (ORR). Moreover, it shows enhanced hydrogen evolution reaction (HER) activity as compared to the precursor. Also, when serving as an air-cathode in the assembly of the liquid Zn–air battery (ZAB), it delivers a charge and discharge cycle of 320 hours and a voltage gap of 0.78 V at 5 mA cm−2. All the electrocatalytic properties of CoNi2S4@CoNi-LDH/SSM are superior to the precursor, CoNi-LDH/SSM. Further vulcanization formed the heterojunction of CoNi2S4@CoNi-LDH and resulted in the obtained CoNi2S4@CoNi-LDH/SSM, which is an outstanding trifunctional catalyst. This study provides an experimental foundation and design inspiration for other self-supported trifunctional catalysts.

Graphical abstract: CoNi2S4@CoNi-LDH heterojunction grown on SSM as a highly efficient trifunctional catalyst for water-splitting and Zn–air batteries

Supplementary files

Article information

Article type
Paper
Submitted
13 Sep 2023
Accepted
05 Nov 2023
First published
06 Nov 2023

J. Mater. Chem. C, 2023,11, 16384-16389

CoNi2S4@CoNi-LDH heterojunction grown on SSM as a highly efficient trifunctional catalyst for water-splitting and Zn–air batteries

Z. Wang, J. Jian, X. Wang, Y. Qiao, M. Wang, S. Gao, P. Nie and L. Chang, J. Mater. Chem. C, 2023, 11, 16384 DOI: 10.1039/D3TC03336H

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