Issue 39, 2024

Hierarchical core–shell heterostructure FeMoS@CoFe LDH for multifunctional green applications boosting large current density water splitting

Abstract

It is crucial to develop catalysts that can work efficiently and stably at high current densities to meet the needs of industrial production. This work proposes the deposition of CoFe LDH nanosheets on the surface of FeMoS nanorods to synthesize FeMoS@CoFe-LDH. The core–shell structure can effectively enhance stability and expose more active sites. In addition, the electronic structure was optimized through interface electronic modulation, accelerating the catalytic kinetics at high current density. The FeMoS@CoFe LDH achieves remarkable bifunctional electrocatalytic performance for overall water splitting at a large current density of 1000 mA cm−2, showing overpotentials of 376 mV for the HER and 320 mV for the OER. Meanwhile, it only requires 1.79 V to drive the water splitting at 500 mA cm−2 and can maintain stable operation for 50 h, which is significantly better than the performance of recently reported nonprecious metal catalysts. In order to promote the practical industrial production of water electrolysis, a capillary-fed electrolysis cell-connected drainage device has been applied to achieve more efficient gas–liquid separation. In addition, solar and wind energy are utilized to drive electrocatalysts for water splitting, achieving an environmentally friendly approach. This work provides strategies and directions for the rational design of efficient catalysts in industrial water electrolysis.

Graphical abstract: Hierarchical core–shell heterostructure FeMoS@CoFe LDH for multifunctional green applications boosting large current density water splitting

Supplementary files

Transparent peer review

To support increased transparency, we offer authors the option to publish the peer review history alongside their article.

View this article’s peer review history

Article information

Article type
Paper
Submitted
16 jul 2024
Accepted
25 aug 2024
First published
28 aug 2024

J. Mater. Chem. A, 2024,12, 26528-26535

Hierarchical core–shell heterostructure FeMoS@CoFe LDH for multifunctional green applications boosting large current density water splitting

C. Han, Y. Zhao, G. Chen, H. Song, X. Wu, Z. Guo and C. Chen, J. Mater. Chem. A, 2024, 12, 26528 DOI: 10.1039/D4TA04919E

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