Issue 28, 2023

Homogenizing of Pt on NiCu films for enhanced HER activity by two-step magneto-electrodeposition

Abstract

The efficient production of hydrogen through water electrolysis requires stable, high-performance and rather cost-effective electrocatalysts to promote the hydrogen evolution reaction (HER). Platinum (Pt) is known to be a benchmark electrocatalyst for the HER, but its high-cost is a major obstacle for large-scale applications. Therefore, reducing Pt loading on electrodes, with a minimal influence on the electrochemical performance is of significant importance. Here, we report on the effective utilization of Pt through a simple two-step magneto-electrodeposition synthesis method, leading to the formation of uniformly dispersed Pt/NiCu electrocatalysts with an excellent catalytic activity. Under optimum conditions, NiCu substrates are fabricated under a vertical static magnetic field of 0.5 T, followed by pulsed electrodeposition of Pt under the same magnetic field. The electrocatalyst (0.5 T NiCu + 0.5 T Pt) exhibits a high stability and superior HER activity, characterized by low overpotentials of 10.6, 54.6, and 87.8 mV obtained at current densities of 10, 100, and 200 mA cm−2, respectively, accompanied by a small Tafel slope of 13.4 mV dec−1 in alkaline media (1 M KOH). This work provides a new approach enabling the optimum utilization of Pt-based electrocatalysts employed for the HER.

Graphical abstract: Homogenizing of Pt on NiCu films for enhanced HER activity by two-step magneto-electrodeposition

Supplementary files

Article information

Article type
Paper
Submitted
28 Mrz 2023
Accepted
15 Mai 2023
First published
26 Mai 2023

New J. Chem., 2023,47, 13098-13105

Homogenizing of Pt on NiCu films for enhanced HER activity by two-step magneto-electrodeposition

D. Li, T. Shan, C. Liu, C. Zhao, A. Doherty, A. R. Kamali and Q. Wang, New J. Chem., 2023, 47, 13098 DOI: 10.1039/D3NJ01397A

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