Synthesis of NiS/Ni3S4/Ni3S2/NF Heterostructure as High-Efficiency Electrocatalyst for Oxygen Evolution Reaction

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-09-18 DOI:10.1007/s10562-025-05166-7

Tuojie Yang, Lei Yang, Yiming Xie, Chang Dai, Zihang Li, Sifan Zhang, Ke Wang, Fulong Li, Lin Jiang, Yinghui Sun

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引用次数: 0

Abstract

The design of cost-effective electrocatalysts with excellent performance is imperative for water splitting. Herein, novel heterostructured NiS/Ni₃S₄/Ni₃S₂/NF electrocatalysts were successfully prepared by hydrothermal synthesis in a one-pot process, exhibiting efficient activity in the oxygen evolution reaction (OER) with a low overpotential of 237 mV at 10 mA cm^-2 and a corresponding Tafel slope of 30.44 mV dec^-1 in 1.0 M KOH. The overall electrocatalytic water splitting cell voltage was only 1.51 V at 10 mA cm^-2 in KOH when using NiS/Ni₃S₄/Ni₃S₂/NF as the anode and platinum on carbon (Pt/C) as the cathode. Density functional simulations further revealed that the exceptional activity primarily stems from the coupling interactions between Ni₃S₂(110)/Ni₃S₄(100) interfaces, which not only optimizes the adsorption free energy of OER intermediates but also enhances catalytic performance. This synthetic strategy provides an avenue for expanding other cost-effective multiphase metal heterostructures.

Graphical Abstract

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NiS/Ni3S4/Ni3S2/NF异质结构高效析氧电催化剂的合成

设计性价比高、性能优良的电催化剂是水分解的必要条件。通过水热一锅法成功制备了新型异质结构NiS/Ni3S4/Ni3S2/NF电催化剂，该催化剂在10 mA cm-2下的过电位为237 mV，在1.0 M KOH下的Tafel斜率为30.44 mV dec1，具有良好的析氧活性。以NiS/Ni3S4/Ni3S2/NF为阳极，铂对碳（Pt/C）为阴极时，电催化水分解电池的总电压仅为1.51 V， KOH为10 mA cm-2。密度泛函模拟进一步表明，Ni3S2(110)/Ni3S4（100）界面之间的耦合相互作用不仅优化了OER中间体的吸附自由能，而且提高了催化性能。这种合成策略为扩展其他具有成本效益的多相金属异质结构提供了一条途径。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.