Issue 18, 2022

Metal–organic-framework embellished through ion etching method for highly enhanced electrochemical oxygen evolution reaction catalysis

Abstract

Metal–organic-frameworks (MOFs) are scarcely considered to catalyse electrochemical reactions directly due to the limitation of their bulk structure, poor conductivity, and scarce active sites. Fe ions, as effective activity boosters for nickel-based catalysts, can effectively modulate the neatly arranged structure and electron configuration of MOF materials through the penetrating and etching process. Therefore, a Fe ion etching method was employed to modulate the structure and electronic configuration of bulk MOF. The resulting Ni-MOF-Fe-2 was equipped with a wider pore width distribution and lower crystallinity, and the Fe ion doping induced many dislocations and stacking faults in the lattice planes, which provided sufficient defects and active sites for OER. Therefore, Ni-MOF-Fe-2 displayed an advanced performance with an overpotential of 269 mV at the current density of 10 mA cm−2, and the small Tafel slope of 47.1 mV dec−1 and charge transfer resistances (Rct) of 8.31 Ω revealed its fast kinetics and high electron transfer efficiency, indicating that Fe ion etching played an important role in booting OER performance of Ni MOF.

Graphical abstract: Metal–organic-framework embellished through ion etching method for highly enhanced electrochemical oxygen evolution reaction catalysis

Supplementary files

Article information

Article type
Research Article
Submitted
03 5 2022
Accepted
01 8 2022
First published
03 8 2022

Mater. Chem. Front., 2022,6, 2750-2759

Metal–organic-framework embellished through ion etching method for highly enhanced electrochemical oxygen evolution reaction catalysis

Q. Mou, Z. Xu, W. Zuo, T. Shi, E. Li, G. Cheng, X. Liu, H. Zheng, H. Li and P. Zhao, Mater. Chem. Front., 2022, 6, 2750 DOI: 10.1039/D2QM00388K

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