Issue 29, 2025

Microwave quasi-solid-constructed Ni2P–Ni12P5-supported Os with unique metal–support interaction for anion-exchange membrane seawater electrolysis

Abstract

Highly efficient and corrosion-resistant electrocatalysts for the seawater hydrogen evolution reaction (HER) are crucial for large-scale hydrogen production. Herein, Ni2P–Ni12P5-supported Os (Os/Ni2P–Ni12P5) was synthesized within 30 s via an ultrafast and simple microwave quasi-solid approach. This fabricated interface improves the electron transfer efficiency, while metal–support interaction (MSI) between Os and Ni2P–Ni12P5 further optimizes the electronic structure, and then significantly expedites the HER process. The electrocatalyst presents excellent performance in alkaline seawater with a low overpotential of 17 mV to reach the current density of 10 mA cm−2. In simulated industrial conditions (1 M KOH + seawater) using an anion exchange membrane water electrolyzer (AEMWE), the constructed Os/Ni2P–Ni12P5 ‖ RuO2 cell system required a small voltage of 2.06 V to achieve 1 A cm−2. The cost calculation for the produced hydrogen reveals a low price of USD $0.92 per gallon of gasoline equivalent (GGE), which demonstrates its economic advantages for industrialized application. Moreover, various stability measurements revealed that the electrolytic cell system exhibits excellent durability without significant current fluctuations. This corrosion-resistant electrocatalyst with enhanced price activity and mass activity for sustainable seawater electrolysis will pave the way in the design of efficient electrocatalysts with diverse strategies from a novel vision.

Graphical abstract: Microwave quasi-solid-constructed Ni2P–Ni12P5-supported Os with unique metal–support interaction for anion-exchange membrane seawater electrolysis

Supplementary files

Article information

Article type
Edge Article
Submitted
22 Apr 2025
Accepted
12 Jun 2025
First published
13 Jun 2025
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2025,16, 13306-13315

Microwave quasi-solid-constructed Ni2P–Ni12P5-supported Os with unique metal–support interaction for anion-exchange membrane seawater electrolysis

Q. Liu, X. Fu, H. Li, J. Xing, W. Xiao, Y. Zong, G. Fu, J. Wang, Q. Cao, T. Ma, L. Wang and Z. Wu, Chem. Sci., 2025, 16, 13306 DOI: 10.1039/D5SC02930A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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