High-entropy sulfurization enables efficient non-noble metal-based NiCoFeCuS electrocatalyst for alkaline oxygen evolution reaction

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology Pub Date : 2024-07-02 DOI:10.1016/j.partic.2024.06.014

Pan Yang , Mengxiang Sun , Jingchuan Wang , Jinfeng Li , Ruizhu Yang , Yawei Hao , Li Qi , Lijun Yang , Xue Liu

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Abstract

Highly active and cost-effective oxygen evolution reaction electrocatalysts have become essential to replace commercial electrocatalysts that rely on rare noble metals. High-entropy sulfide nanomaterials, characterized by abundant randomly distributed elements and inherent stability, possess significant potential for applications. However, challenges such as uneven composition, partial oxidation, or imprecise synthesis control still remain in the materials preparation. Herein, a simple and effective two-step hydrothermal method was employed to synthesize NiCoFeCuS nanoparticles supported on foam nickel substrate. With the catalytic active sites produced by electron density redistribution in high-entropy and sulfurization, NiCoFeCuS exhibits excellent alkaline OER performance, with an overpotential of 261 mV and a Tafel slope of 57.97 mV dec⁻¹ at the current density of 10 mA cm⁻², which is only 88% of commercial RuO₂ without any noble metals.

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高熵硫化实现了碱性氧进化反应的高效非贵金属基镍钴铁铜氧化物电催化剂

高活性、高成本效益的氧进化反应电催化剂对于取代依赖稀有贵金属的商用电催化剂至关重要。高熵硫化物纳米材料具有丰富的随机分布元素和固有的稳定性，具有巨大的应用潜力。然而，在材料制备过程中仍存在成分不均匀、部分氧化或合成控制不精确等难题。本文采用简单有效的两步水热法合成了支撑在泡沫镍基底上的 NiCoFeCuS 纳米粒子。通过高熵和硫化过程中电子密度再分布产生的催化活性位点，NiCoFeCuS 表现出优异的碱性 OER 性能，在电流密度为 10 mA cm-2 时，过电位为 261 mV，Tafel 斜率为 57.97 mV dec-1，仅为不含任何贵金属的商用 RuO2 的 88%。

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来源期刊

Particuology 工程技术-材料科学：综合

CiteScore

6.70

自引率

2.90%

发文量

1730

审稿时长

32 days

期刊介绍： The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles. Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors. Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology. Key topics concerning the creation and processing of particulates include: -Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales -Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes -Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc. -Experimental and computational methods for visualization and analysis of particulate system. These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.