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

作　　者：Pan Yang Mengxiang Sun Jingchuan Wang Jinfeng Li Ruizhu Yang Yawei Hao Li Qi Lijun Yang Xue Liu 

机构地区：[1]Institute of Materials,China Academy of Engineering Physics,Jiangyou,621908,China [2]State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao,066004,China [3]Science and Technology on Surface Physics and Chemistry Laboratory,Jiangyou,621907,China

出　　处：《Particuology》2024年第10期180-185,共6页颗粒学报（英文版）

基　　金：supported by the Natural Science Foundation of Sichuan Province(grant No.2023NSFSC0971);the Science and Technology on Surface Physics and Chemistry Laboratory Fund(grant No.XKFZ202105).

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 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 RuO_(2) without any noble metals.

关 键 词：High-entropy SULFURIZATION NiCoFeCuS electrocatalyst Oxygen evolution reaction Overpotentials 

分 类 号：TQ426[化学工程] TQ116