高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (11): 2264.

• 研究论文 • 上一篇    下一篇

NiCo2O4纳米线对 H2O2电还原的催化性能

王贵领1, 郝世阳1, 陆天虹2, 曹殿学1, 尹翠蕾1   

  1. 1. 哈尔滨工程大学材料科学与化学工程学院, 哈尔滨 150001;
    2. 南京师范大学化学与环境科学学院, 南京 210097
  • 收稿日期:2010-01-18 出版日期:2010-11-10 发布日期:2010-11-10
  • 通讯作者: 王贵领, 男, 博士, 教授, 主要从事电化学和化学电源的研究. E-mail: wangguiling@hrbeu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20973048)和哈尔滨科技创新人才基金(批准号: 2007RFQXG023)资助.

Electrocatalytic Performances of NiCo2O4 Nanowires for H2O2 Eectroreduction

WANG Gui-Ling1*, HAO Shi-Yang1, LU Tian-Hong2, CAO Dian-Xue1, YIN Cui-Lei1   

  1. 1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;
    2. College of Chemistry and Environmental Science,Nanjing Normal University, Nanjing 210097, China
  • Received:2010-01-18 Online:2010-11-10 Published:2010-11-10
  • Contact: WANG Gui-Ling. E-mail: wangguiling@hrbeu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20973048)和哈尔滨科技创新人才基金(批准号: 2007RFQXG023)资助.

摘要: 以无模板生长法制备了泡沫镍载NiCo2O4纳米线正极材料, XRD和SEM表征结果表明, 所得材料为NiCo2O4纳米线, 以循环伏安法和计时电流法研究了泡沫镍载NiCo2O4纳米线对H2O2电还原的催化性能. 结果显示, 在0.4 mol/L H2O2 和 3.0 mol/L NaOH 溶液中, 当电压为-0.4 V(vs. Ag/AgCl)时, 循环伏安的电流密度达到125 mA/cm2; 当电压为-0.2, -0.3和 -0.4 V 时, 在30 min 的测试时间内, 计时电流密度几乎均为一常数, 表明以泡沫镍载NiCo2O4纳米线为催化剂电还原H2O2具有很高的活性和很好的稳定性.

关键词: NiCo2O4纳米线, 无模板生长法, 过氧化氢, 电还原

Abstract: Ni foam supported-NiCo2O4 nanowires as cathode catalyst for electroreduction of hydrogen peroxide were reported. Ni foam supported-NiCo2O4 nanowires were prepared by a template-free growth method, and characterized by X-ray diffraction spectroscopy(XRD) and scanning electron microscopy(SEM). Electrocatalytic performances of Ni foam supported-NiCo2O4 nanowires for H2O2 electrochemical reduction were investigated by cyclic voltammetry and chronoamperometry. The results show that a current density of 125 mA/cm2 in 0.4 mol/L H2O2 and 3.0 mol/L NaOH is achieved at -0.4 V(vs. Ag/AgCl) by cyclic voltammetry, and the chronoamperometric current densities remain nearly constant within a 30 min test period at -0.2, -0.3 and -0.4 V, respectively. The results indicate that Ni foam supported-NiCo2O4 nanowires as cathode catalyst have considerable activity and stability for H2O2 electroreduction in alkaline medium.

Key words: NiCo2O4 nanowire, Template-free growth method, Hydrogen peroxide, Electroreduction

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