Issue 19, 2021

Controllable synthesis of multidimensional carboxylic acid-based NiFe MOFs as efficient electrocatalysts for oxygen evolution

Abstract

The oxygen evolution reaction (OER), an essential half reaction of water splitting to produce green hydrogen, has been subject to high overpotentials and restrictions on the use of noble metal catalysts. Metal–organic frameworks (MOFs) are a class of structure-adjustable novel material composed of metal nodes and organic ligands, and their unique physical and chemical properties endow them with adjustable catalytic properties and make them potentially alternate to noble metal catalysts for the OER. However, the controllable synthesis of MOFs with a favorable structure for the OER is still a great challenge. Here, we report a simple solvent-assisted strategy to realize the synthesis of NiFe MOFs with controllable morphology and electronic structure. Owing to the highly exposed active sites and optimized electronic structure for the active sites, the obtained two-dimensional carboxylic acid-based MOFs (2D-NiFe-BDC) show an excellent OER activity in 1.0 M KOH, the overpotential for oxygen evolution is as low as 223 mV at 10 mA cm−2, and the Tafel slope is 37.3 mV dec−1, together with a decent stability of at least 70 h under a large current density of 100 mA cm−2. Moreover, we also investigate and prove the universality of this synthesis method for other carboxylic acid-based MOFs. This work not only provides a universal route to design 2D MOFs but also demonstrates the superiority of the method to adjust the performance of highly efficient OER catalysts for related energy conversion and storage technologies.

Graphical abstract: Controllable synthesis of multidimensional carboxylic acid-based NiFe MOFs as efficient electrocatalysts for oxygen evolution

Supplementary files

Article information

Article type
Research Article
Submitted
01 júl 2021
Accepted
05 aug 2021
First published
06 aug 2021

Mater. Chem. Front., 2021,5, 7191-7198

Controllable synthesis of multidimensional carboxylic acid-based NiFe MOFs as efficient electrocatalysts for oxygen evolution

K. Yue, J. Liu, C. Xia, K. Zhan, P. Wang, X. Wang, Y. Yan and B. Y. Xia, Mater. Chem. Front., 2021, 5, 7191 DOI: 10.1039/D1QM00960E

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