Efficient electrocatalytic oxygen evolution at ultra-high current densities over 3D Fe,N doped Ni(OH)_(2) nanosheets

作     者：Pu Shi Xiaodi Cheng Siliu Lyu Pu Shi;Xiaodi Cheng;Siliu Lyu

作者机构：Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2021年第32卷第3期

页      面：1210-1214页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 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：Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering Zhejiang University, ZJU 

主　　题：Vapor phase hydrothermal Nitrogen doped NiOOH Oxygen evolution reactio Ultra-high current density 

摘      要：Developing highly efficient nickel or iron based hydroxide electrocatalysts is primary essential but challenging for oxygen evolution reaction(OER)at ultra-high current ***,we developed a facile method to prepare nitrogen and iron doped nickel(Ⅱ)hydroxide nanosheets on self-supported conductive nickel foam(denoted as Fe,N-Ni(OH)_(2)/NF)through ammonia hydrothermal and impregnation *** to the optimization of the electronic structure by nitrogen doping and the strong synergistic effect between Fe and Ni(OH)_(2),the three-dimensional(3 D)Fe,N-Ni(OH)_(2)/NF nanosheets delivered superior electrocatalytic OER performances in basic solution with low potentials of 1.57 V and1.59 V under 500 mA/cm^(2)and 1000 mA/cm^(2)respectively and robust operation for 10 h with ignored activity decay,comparing well with the potentials of previously reported NiFe based electrocatalysts as well as the benchmark commercial Ir/C/***-situ Raman spectroscopy revealed that the main active species were NiOOH during the OER *** present results are expected to provide new insights into the study of OER process towards ultra-high current densities.