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	碳载钴镍合金纳米电极的制备表征与电催化性能; Preparation and characterization of carbon supported CoNi alloy nanoparticles electrode and their electrocatalytic properties
	欧洁连 ; 陈燕鑫 ; 李明轩 ; 许斌斌 ; 王鹏 ; 陈声培 ; 孙世刚
	2013-05-15
关键词	CoNi/GC电极 十八面体 电沉积 亚硝酸盐还原 氧还原 CoNi/GC electrode 18-facet polyhedra electrodeposition nitrite reduction ORR
英文摘要	采用电化学方法在玻碳(gC)表面电沉积COnI合金纳米粒子,成功制得碳载COnI合金纳米电极(COnI/gC)。SEM结果显示,COnI粒子呈十八面体结构,粒径约100nM,分布较均匀。选区电子衍射(SAEd)结果显示,COnI合金纳米粒子为单晶结构。XPS结果显示,金属态的CO(0)和nI(0)占主导地位。性能测试结果表明:COnI/gC不但对亚硝酸钠具有较好的催化性能,相对于本体CO和本体nI,COnI/gC的起始还原电位(EI)正移约90MV,还原峰电流(JP)增大6~14倍。而且对氧还原亦有较好的电催化活性,COnI/gC的峰电流密度(JP)和动力电流密度(Jk)分别是gC电极的1.7和5.2倍。; CoNi alloy nanoparticles were synthesized on glassy carbon(GC)electrode(CoNi/GC)by electrochemical deposition.SEM images showed that the prepared CoNi alloy nanoparticles were 18-facet polyhedra with an average particles size of 100 nm,dispersed on the GC electrode surfaces uniformly.The selected area electron diffraction(SAED)pattern showed that CoNi alloy nanoparticles were single crystals.X-ray photoelectron spectroscopy(XPS)showed that the Co(0)and Ni(0)were dominant.The electrocatalytical activities for nitrite reduction of bulk Co,bulk Ni and CoNi/GC electrodes were investigated by cyclic voltammetry(CV).Onset potential(Ei)of nitrite reduction on CoNi/GC electrode was positively shifted 90 mV,and peak current density(jp)was 6—14 times higher than those of bulk Co and bulk Ni electrode.CoNi/GC electrode also showed an enhancement of electrocatalytical activity towards oxygen reduction reaction,of which peak current density(jp)was 1.7 times and dynamic current density(jk)was 5.2 times higher than those of GC electrode.; 国家自然科学基金项目(21222310;21021002;21073152); 浙江省重中之重学科开放基金项目(20090503)~~
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/106877]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	欧洁连,陈燕鑫,李明轩,等. 碳载钴镍合金纳米电极的制备表征与电催化性能, Preparation and characterization of carbon supported CoNi alloy nanoparticles electrode and their electrocatalytic properties[J],2013.
APA	欧洁连.,陈燕鑫.,李明轩.,许斌斌.,王鹏.,...&孙世刚.(2013).碳载钴镍合金纳米电极的制备表征与电催化性能..
MLA	欧洁连,et al."碳载钴镍合金纳米电极的制备表征与电催化性能".(2013).

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