Synergistic electronic interaction between ruthenium and nickel-iron hydroxide for enhanced oxygen evolution reaction

作     者：Hao Cui Han-Xiao Liao Zhi-Lu Wang Jian-Ping Xie Peng-Fei Tan De-Wei Chu Pan Jun Hao Cui;Han-Xiao Liao;Zhi-Lu Wang;Jian-Ping Xie;Peng-Fei Tan;De-Wei Chu;Pan Jun

作者机构：State Key Laboratory of Powder MetallurgyCentral South UniversityChangsha410083China chool of Minerals Processing and BioengineeringCentral South UniversityChangsha410083China School of Materials Science and EngineeringUniversity of New South WalesSydney2052Australia 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第8期

页      面：2606-2615页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos.12074435, 51871250 and 52001335) the Science and Technology Innovation Program of Hunan Province (No.2021RC4001) the State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal (No.SKL-SPM-202005) 

主　　题：Ru-decorated NiFe hydroxide Electronic interaction Electrocatalyst Oxygen evolution reaction(OER) 

摘      要：The efficiency of electrochemical water splitting is extremely hampered by the sluggish oxygen evolution reaction(OER)occurred at the ***,developing high-performance OER electrocatalysts is crucial for realizing the industrialized application of water ***,a high-efficiency electrocatalyst of ruthenium-decorated nickel-iron hydroxide(10 Ru-NiFe LDH)supported on Ni foam is successfully synthesized for *** NiFe LDH with ruthenium can optimize the electronic density to form high valences of metal sites,which is beneficial to promote its OER ***,the 10 Ru-NiFe LDH only needs a low overpotential of 222 mV to achieve a current density of50 mA,cm^(-2),which exhibits fast OER kinetics with a small Tafel slope of 58 ***^(-1).Moreover,this electrocatalyst shows high stability over 20 h at a high current density of 100 mA·cm^(-2)without obvious *** decent OER performances can be ascribed to the increased active sites and the synergistic electronic interactions among Ni,Fe and *** work provides an effective approach for designing desirable electrocatalysts for OER.