Issue 17, 2024

Bimetal-doped cobalt oxyhydroxides/hydroxides synthesized by electrochemistry for enhanced OER activity

Abstract

Metal hydroxides and oxyhydroxides are efficient catalysts for electrochemical oxygen evolution reactions. Herein, we employed a Co-MOF with a tunable structure, high porosity and easy preparation as a precursor to synthesize a bimetal-doped oxyhydroxide/hydroxide electrocatalyst by sequential electrochemical-Lewis acid co-etching and electrosorption doping. This unique co-etching method successfully introduced the high-valent metal ion Hf4+, as well as the electrosorption efficiently doped Fe3+, into the catalyst. Experimental studies and theoretical simulations indicate that the introduction of Hf4+ optimized the OER kinetics, and the introduction of Fe3+ lowered the overpotential. This synthetic strategy of doping high-valent metal ions provides a new avenue for designing high-performance electrocatalysts.

Graphical abstract: Bimetal-doped cobalt oxyhydroxides/hydroxides synthesized by electrochemistry for enhanced OER activity

Supplementary files

Article information

Article type
Research Article
Submitted
03 Apr 2024
Accepted
01 Jul 2024
First published
02 Jul 2024

Inorg. Chem. Front., 2024,11, 5449-5457

Bimetal-doped cobalt oxyhydroxides/hydroxides synthesized by electrochemistry for enhanced OER activity

R. Zhu, Y. Zhang, L. Liu, Y. Li, G. He and H. Pang, Inorg. Chem. Front., 2024, 11, 5449 DOI: 10.1039/D4QI00823E

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