Issue 19, 2024

Boosting the oxygen evolution reaction via the reconstruction of an M(OH)x/Fe3O4 catalyst

Abstract

For large-scale hydrogen production from electrocatalysis of water, Ni- and/or Fe-based catalysts were commonly used but were limited by the ultrahigh overpotential and poor stability at a high current density (>500 mA cm−2). Here, the reconstruction of M(OH)x/Fe3O4 (M = Ni, Fe) arrays has been performed for boosting the oxygen evolution reaction (OER). The prepared M(OH)x/Fe3O4 grown on iron foam (M(OH)x/Fe3O4/IF) catalysts exhibited low overpotentials of 214 and 311 mV for the OER at current densities of 50 and 500 mA cm−2, respectively. In addition, an excellent stability up to 70 h of operation was achieved at a current density of 10 mA cm−2 in 1 M KOH. The in situ Raman spectra revealed that the reconstruction of M(OH)x/Fe3O4/IF boosted the OER activity. Theoretical calculations revealed favorable absorption of O2 at the Ni site of M(OH)x/Fe3O4/IF during the OER. This work highlights the reconstruction of structurally definite catalysts for promoting the catalytic activity toward the OER and the large-scale electrocatalysis of water.

Graphical abstract: Boosting the oxygen evolution reaction via the reconstruction of an M(OH)x/Fe3O4 catalyst

Supplementary files

Article information

Article type
Research Article
Submitted
22 jun. 2024
Accepted
03 ago. 2024
First published
06 ago. 2024

Inorg. Chem. Front., 2024,11, 6333-6342

Boosting the oxygen evolution reaction via the reconstruction of an M(OH)x/Fe3O4 catalyst

X. Wang, L. Wang, Y. Liu, R. Devasenathipathy, L. Liu, Q. Huang, D. Huang, Y. Fan, D. Chen and W. Chen, Inorg. Chem. Front., 2024, 11, 6333 DOI: 10.1039/D4QI01574F

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