文献类型：期刊文献

中文题名：电沉积FeCoNi层状氢氧化物作为碱性水电解析氧反应催化剂的研究

英文题名：Electrodeposition of FeCoNi Layered Hydroxides as Catalysts of Oxygen Evolution Reaction in Alkaline Water Electrolysis

作者：刘国庆[1];刘帅[1];古京九[1];李冰[1,2]

机构：[1]华东理工大学机械与动力工程学院,上海200237;[2]龙岩大学龙岩大学清洁能源协同创新中心,福建龙岩364012

年份：2021

卷号：11

期号：9

起止页码：30

中文期刊名：有色金属工程

外文期刊名：Nonferrous Metals Engineering

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：国家自然科学基金资助项目(51774145)。

语种：中文

中文关键词：析氧反应;FeCoNi层状氢氧化物;电沉积;碱性水电解

外文关键词：oxygen evolution reaction;FeCoNi layered hydroxides;electrodeposition;alkaline water electrolysis

摘要：在-0.8--1.2 V(vs.SCE)的电位范围内,通过不同时间的电沉积,制备了FeCoNi层状氢氧化物。在-1.0 V下沉积600 s得到的FeCo_(5)Ni_(13),均匀分布在泡沫镍(NF)基体表面,呈层状结构。FeCo_(5)Ni_(13)的层厚约30 nm,彼此交织形成蜂窝状,不仅提供了高的比表面积,还增强了FeCo_(5)Ni_(13)与基底之间的结合。FeCo_(5)Ni_(13)作为析氧反应的催化剂时,最低初始电位仅为1.48 V(vs.RHE),最小的过电位为100 mA/cm^(2)时的310 mV,以及最低的Tafel斜率,仅为39 mV/dec,表现出最佳的催化性能。在10 mA/cm^(2)条件下电解120 h后,FeCo_(5)Ni_(13)仍保持蜂窝结构并且催化性能几乎没有退化。因此,电沉积FeCo_(5)Ni_(13)层状氢氧化物在碱性水电解析氧反应中具有良好的应用前景。
FeCoNi layered hydroxides were prepared via electrodeposition at the potential range from-0.8 V to-1.2 V for various deposition times.FeCo_(5)Ni_(13) were obtained at-1.0 V for 600 s,which uniformly distributed on the surface of NF matrix and presented a layered structure.The layers of FeCo_(5)Ni_(13) were about 30 nm thick and interwoven with each other to form a honeycomb shape,which not only provided a high specific surface area,but also strengthen the connection between the FeCo_(5)Ni_(13) and the substrate.When used as the catalysts of oxygen evolution reaction,FeCo_(5)Ni_(13) LH had the lowest initial potential of 1.48 V(vs.RHE),and the smallest overpotentials of 310 mV,respectively at 100 mA/cm^(2),as well as the lowest Tafel slope,only 39 mV/dec,indicating the optimal catalytic performance.After long-term electrolysis at 10 mA/cm^(2) for 120 h,FeCo_(5)Ni_(13) LH still maintained the honeycomb structure and nearly the same catalytic performances.Therefore,electrodeposition of FeCo_(5)Ni_(13) layered hydroxides implied a good application prospect in oxygen evolution reaction in alkaline water electrolysis.