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

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外文摘要：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 over-potential 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.

外文关键词：

High-entropySulfurizationNiCoFeCuS electrocatalystOxygen evolution reactionOverpotentials

作者：

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

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作者单位：

Institute of Materials,China Academy of Engineering Physics,Jiangyou 621908,China

Institute of Materials,China Academy of Engineering Physics,Jiangyou,621908,China

State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao,066004,China

Science and Technology on Surface Physics and Chemistry Laboratory,Jiangyou,621907,China

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University,Qinhuangdao 066004,China

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基金：

Natural Science Foundation of Sichuan ProvinceScience and Technology on Surface Physics and Chemistry Laboratory Fund

项目编号：

2023NSFSC0971XKFZ202105

出版年：

2024

DOI：

10.1016/j.partic.2024.06.014

颗粒学报(英文版)

中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD

影响因子：0.632

ISSN：1674-2001

年,卷(期)：2024.93(10)