N-doped NiS2 nanosheets array on carbon fiber as an efficient hydrogen evolution reaction electrocatalyst

IF 1.6 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Transition Metal Chemistry Pub Date : 2024-07-04 DOI:10.1007/s11243-024-00594-7

Feng Jing, Shibo Du, Zhiheng Ding, Xuepeng Chen, Zhen Liu, Hongying Mei

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Abstract

Electrocatalytic hydrogen production holds great promise as a means of generating green energy. In order to achieve the large-scale industrial application, low-cost and highly efficient electrocatalysts are the key factors. The open mesh nanosheet array structure and doping can expose more active sites and effectively enhance electron transport during the hydrogen evolution reaction. Herein, a simple nanostructured electrocatalyst consisting of nitrogen-doped NiS₂ nanosheets array grown on carbon fiber cloth (N-NiS₂/CF) has been constructed. Benefiting from its nitrogen-doped, nanosheets array and intrinsic pyrite like structure, the optical N-NiS₂/CF electrode exhibits relatively excellent catalytic activity and long-time stability in both alkaline and acidic media. Especially, to drive the current density of 10 mA cm⁻², only an overpotential of 96 mV and 163 mV were needed in 1.0 M KOH and 0.5 M H₂SO₄, respectively. The as obtained N-NiS₂/CF can be a promising non-noble-metal electrocatalyst for practical hydrogen production application.

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碳纤维上的 N 掺杂 NiS2 纳米片阵列作为高效氢进化反应电催化剂

作为一种生产绿色能源的手段，电催化制氢前景广阔。要实现大规模工业应用，低成本、高效率的电催化剂是关键因素。开放网状纳米片阵列结构和掺杂可以暴露出更多的活性位点，并在氢进化反应过程中有效增强电子传输。本文构建了一种简单的纳米结构电催化剂，它由生长在碳纤维布上的氮掺杂 NiS2 纳米片阵（N-NiS2/CF）组成。得益于其掺氮纳米片阵列和类似黄铁矿的固有结构，光学 N-NiS2/CF 电极在碱性和酸性介质中均表现出相对优异的催化活性和长期稳定性。特别是在 1.0 M KOH 和 0.5 M H2SO4 中，驱动 10 mA cm-2 的电流密度分别只需要 96 mV 和 163 mV 的过电位。所获得的 N-NiS2/CF 可作为一种非贵金属电催化剂，在实际制氢应用中大有可为。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.