A stable oxygen evolution splitting electrocatalysts high entropy alloy FeCoNiMnMo in simulated seawater

作     者：Peng Li Yuanpeng Yao Wengen Ouyang Ze Liu Huayi Yin Dihua Wang Peng Li;Yuanpeng Yao;Wengen Ouyang;Ze Liu;Huayi Yin;Dihua Wang

作者机构：International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei ProvinceWuhan UniversityWuhan 430072China School of Resource and Environmental ScienceWuhan UniversityWuhan 430072China Department of Engineering MechanicsSchool of Civil EngineeringWuhan UniversityWuhan 430072China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2023年第138卷第7期

页      面：29-35页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.52031008 12102307 and 11872284) 

主　　题：High entropy alloy Oxygen evolution reaction Corrosion inhibitor Chlorine resistance K_(2)MoO_(4) 

摘      要：Stabilizing anode for oxygen evolution(OER)in chlorine-containing electrolytes is a significant *** corrosion inhibitors in electrolytes can alleviate this problem,but the type and dosage of cor-rosion inhibitors need a lot of exploration,and side reactions may occur to reduce current ***,we prepared a FeCoNiMnMo High entropy alloy(HEA)electrode for OER in simulated seawa-ter without corrosion *** exhibits great electrocatalytic activity(overpotential(η)=237 mV at 10 mA cm^(-2))and excellent stability(200 h at 100 mA cm^(-2)).Experiments and Density Functional The-ory(DFT)calculation show that the protective layer containing K_(2)MoO_(4)is the crucial factor for chlorine resistance of FeCoNiMnMo *** tightly adsorbed state of Cl-and K_(2)MoO_(4)ensures that other oxides are not *** the externally added K_(2)MoO_(4)cannot protect the *** addition,the high-entropy effect of HEA reduces the dissolution of the *** work provides an efficient way to prepare a noble-free HEA catalyst that can stabilize oxygen evolution in corrosive electrolytes.