FeCo合金纳米电催化剂制备及其性能研究  

Preparation and Electrocatalytic Properties of FeCo Alloy Cubic Nanoparticles

作　　者：李明轩[1] 欧洁连[1] 陈燕鑫[1] 陈声培[1] 王鹏[1] 许斌斌[1] 孙世刚[1] 

机构地区：[1]厦门大学固体表面物理化学国家重点实验室,化学化工学院化学系,福建厦门361005

出　　处：《电化学》2013年第2期125-129,共5页Journal of Electrochemistry

基　　金：新世纪优秀人才支持计划(No.NCET-10-0715);高等学校全国优秀博士学位论文作者专项资金(No.201126);浙江省重中之重学科开放基金项目(No.20090503)资助

摘　　要：运用电化学电位阶跃技术,在玻碳基底上制得FeCo合金纳米电催化剂.XRD、SEM和TEM表征结果显示,制备的FeCo合金纳米粒子为单晶,呈立方体形貌,分布较均一,平均粒径65 nm,Fe和Co原子百分比约1∶1.电化学测试结果表明,FeCo/GC电极具有比Fe/GC电极更高的电催化活性,对亚硝酸盐还原的活性是Fe/GC电极的4.7倍.FeCo/GC电极对氧还原也表现出优异的催化性能.FeCo alloy nanoparticles were deposited on glassy carbon electrode （FeCo/GC） by chronoamperometry. X-ray diffraction （XRD）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM） were used to characterize the samples. The results indicate that FeCo cubic nanoparticles are single crystals with an average size of 65 nm. The atom ratio of re：Co is 1：1. The catalytic properties of the FeCo/GC towards nitrite electroreduction and oxygen reduction were investigated. It is shown that the steady reduction current density of nitrite on FeCo/GC is 4.7 times larger than that on Fe/GC, the FeCo/GC electrode also exhibit an enhanced activity towards oxygen reduction reaction.

关 键 词：FeCo合金 立方体 电催化 亚硝酸盐还原 氧还原 

分 类 号：O646.54[理学—物理化学]