Iron Foam-Derived Nickel-Iron Hydroxide Nanosheets via Solution Etching as Robust Catalysts for Alkaline Seawater Oxidation

IF 4.2 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2025-09-08 DOI:10.1039/d5cc03509k

Yujie Yuan, Tong Wu, Xiaoyi Zhang, Zhaohuan Wei, Hui Tang

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Abstract

Traditional electrocatalyst fabrication techniques, such as hydrothermal/solvothermal method and electrodeposition may result in excessive energy consumption and safety concerns that hinder their scalability and practical application. Herein, we report a facile room-temperature solution corrosion method to synthesize nickel-iron hydroxide (NiFe(OH)x) nanosheets on by using five different nickel salts (NiCl2、NiSO4、Ni(NO3)2、(CH3COO)2Ni、NiF2) for efficient seawater oxidation. By simply immersing Fe foam (FF) in the nickel salt solution, we achieved in situ growth of ultrathin NiFe(OH)x nanosheets with abundant active sites and enhanced charge transfer properties.The as-prepared NiFe(OH)x/FF electrode exhibits excellent electrocatalytic activity for the oxygen evolution reaction (OER) in alkaline seawater oxidation, delivering high current density at low overpotentials with remarkable durability. This work provides a simple and scalable strategy for designing cost-effective electrocatalysts for seawater splitting, offering potential applications in renewable hydrogen production.

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溶液刻蚀法制备泡沫铁衍生的氢氧化铁镍纳米片作为碱性海水氧化催化剂

传统的电催化剂制造技术，如水热/溶剂热法和电沉积法，可能会导致过多的能量消耗和安全问题，从而阻碍其可扩展性和实际应用。在此，我们报道了一种简单的室温溶液腐蚀方法，在五种不同的镍盐(NiCl2, NiSO4, Ni（NO3)2, (CH3COO)2Ni, NiF2）上合成氢氧化铁镍（NiFe(OH)x）纳米片，以实现高效的海水氧化。通过简单地将Fe泡沫（FF）浸入镍盐溶液中，我们实现了超薄NiFe(OH)x纳米片的原位生长，该纳米片具有丰富的活性位点和增强的电荷转移性能。制备的NiFe(OH)x/FF电极在碱性海水氧化中表现出良好的析氧反应（OER）电催化活性，在低过电位下提供高电流密度，并具有显著的耐久性。这项工作为设计具有成本效益的海水分解电催化剂提供了一种简单且可扩展的策略，为可再生制氢提供了潜在的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.