Issue 10, 2024

La doping greatly enhances electrochemical alkaline seawater oxidation over Ni(OH)2 nanosheet

Abstract

The utilization of seawater electrolysis is recognized as a promising method for generating H2 as a substitute for conventional technology. Nevertheless, it is impeded by anode catalysts with restricted lifespans, primarily due to chloride-induced competitive chemical reactions. This study reports an La-doped Ni(OH)2 nanosheet supported on Ni foam (La–Ni(OH)2/NF) as an outstanding oxygen evolution reaction electrocatalyst, which demonstrates remarkable performance in alkaline seawater. Impressively, the achievement of a high current density (500 mA cm−2) requires a low overpotential of only 434 mV, surpassing that of Ni(OH)2/NF (532 mV). In addition, La–Ni(OH)2/NF exhibits outstanding electrochemical stability for the duration of more than 200 h in alkaline seawater.

Graphical abstract: La doping greatly enhances electrochemical alkaline seawater oxidation over Ni(OH)2 nanosheet

Supplementary files

Article information

Article type
Communication
Submitted
15 Mar 2024
Accepted
15 Apr 2024
First published
16 Apr 2024

Catal. Sci. Technol., 2024,14, 2717-2721

La doping greatly enhances electrochemical alkaline seawater oxidation over Ni(OH)2 nanosheet

W. Tang, J. Zou, Z. Li, X. Zhang, T. Xie, J. Li, X. He, X. Tang, X. Liu, W. Chu, A. Farouk, M. S. Hamdy, Y. Yang, W. (Walter) Hu and X. Sun, Catal. Sci. Technol., 2024, 14, 2717 DOI: 10.1039/D4CY00353E

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