Preparation and characterization of carbon supported CoNi alloy nanoparticles electrode and their electrocatalytic properties

OU Jielian; CHEN Yanxin; LI Mingxuan; XU Binbin; WANG Peng; CHEN Shengpei; SUN Shigang

doi:10.3969/j.issn.0438-1157.2013.05.031

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Preparation and characterization of carbon supported CoNi alloy nanoparticles electrode and their electrocatalytic properties

更新时间：2025-12-10

- Preparation and characterization of carbon supported CoNi alloy nanoparticles electrode and their electrocatalytic properties
- CIESC Journal Issue 5, Pages: 1730-1735(2013)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.05.031
  CLC： 646
- Online First：05 May 2013，
  
  Published：05 May 2013
- 稿件说明：
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OU Jielian, CHEN Yanxin, LI Mingxuan, et al. Preparation and characterization of carbon supported CoNi alloy nanoparticles electrode and their electrocatalytic properties[J]. CIESC Journal, 2013, (5): 1730-1735.
DOI：

OU Jielian, CHEN Yanxin, LI Mingxuan, et al. Preparation and characterization of carbon supported CoNi alloy nanoparticles electrode and their electrocatalytic properties[J]. CIESC Journal, 2013, (5): 1730-1735. DOI： 10.3969/j.issn.0438-1157.2013.05.031.

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100 nm

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90 mV

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。

Abstract

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.

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