Enhancing Synergistic Interactions Among Metal Atoms Through S Doping for Efficient Oxygen Evolution Reaction

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-10-03 DOI:10.1007/s10562-025-05198-z

Shengjie Jiang, Qi Wang, Gonggang Sun, Xinbao Li

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Abstract

Developing highly active and stable non-precious-metal electrocatalysts for the oxygen evolution reaction (OER) is essential for efficient green hydrogen production. However, monometallic catalysts exhibit poor stability and high overpotentials under high current densities. Therefore, the development of multi-metallic catalysts has become a focus of attention. Herein, we report a NiCoFeS/NF catalyst that exhibits higher OER activity in alkaline solution compare with commercial RuO₂-based catalysts. The synthesized NiCoFeS/NF catalyst delivers a current density of 100 mA cm^− 2 at a low overpotential of 280 mV and exhibits a Tafel slope of 49 mV dec^− 1, reflecting its favorable kinetics. Furthermore, the NiCoFeS/NF catalyst exhibited a long-term stability over 120 h, ensuring its potential for practical applications. Detailed characterizations revealed that sulfur incorporation not only creates additional active sites but also induces the self-unfolding of nanoparticles into nanosheets, thereby enlarging the electrochemically active surface area (ECSA).

Graphical Abstract

Abstract Image

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通过S掺杂增强金属原子间的协同作用，实现高效析氧反应

开发高活性、稳定的非贵金属析氧电催化剂是实现高效绿色制氢的必要条件。然而，单金属催化剂在高电流密度下稳定性差，过电位高。因此，多金属催化剂的开发已成为人们关注的焦点。在此，我们报道了一种NiCoFeS/NF催化剂，与商用ruo2催化剂相比，在碱性溶液中表现出更高的OER活性。合成的NiCoFeS/NF催化剂在280 mV的低过电位下电流密度为100 mA cm−2，Tafel斜率为49 mV dec−1，反映了其良好的动力学。此外，NiCoFeS/NF催化剂表现出超过120 h的长期稳定性，确保了其实际应用的潜力。详细的表征表明，硫的掺入不仅产生了额外的活性位点，而且诱导纳米颗粒自展开成纳米片，从而扩大了电化学活性表面积（ECSA）。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.