Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (05): 503-507.     Next Articles

Full Papers

超级电容器电极材料γ-MnO2纳米管的制备及性能

陈智栋1,2,高兰1,曹剑瑜1,王文昌1,许娟*,1,2   

  1. (1常州大学化学化工学院 常州 213164)
    (2常州江工阔智有限公司 常州 213164)
  • 投稿日期:2010-08-07 修回日期:2010-09-18 发布日期:2010-11-11
  • 通讯作者: 许娟 E-mail:cjytion3@163.com
  • 基金资助:

    石墨烯负载纳米金属修饰的LiBH4储氢性能及催化机制研究;基于氧化铝摸板(AAO)技术的纳米电源的制备及其电化学性能研究

Preparation and Properties of γ-MnO2 Nanotubes as Electrode Materials of Supercapacitor

Chen Zhidong1,2 Gao Lan1 Cao Jianyu1 Wang Wenchang1 Xu Juan*,1,2   

  1. (1 Department of Chemical Engineering and Technology, Changzhou University, Changzhou 213164)
    (2 Changzhou Jiangsu Polytechnic University Qualtec Co. Ltd., Changzhou 213164)
  • Received:2010-08-07 Revised:2010-09-18 Published:2010-11-11
  • Contact: Juan Xu E-mail:cjytion3@163.com

γ-MnO2 nanotubes have been successfully synthesized by chemically depositing manganese hydroxide in anodic aluminum oxide (AAO) templates and thermally annealing at 500 ℃. The synthesized nanotubes have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption-desorption isotherm analysis. The electrochemical capacitance behavior of the γ-MnO2 nanotubes electrode was investigated by cyclic voltammetry and galvanostatic charge-discharge studies in 1 mol/L Na2SO4 solution. The electrochemical data demonstrate that the γ-MnO2 nanotubes display good capacitive behavior with a high specific capacitance of 566 F/g at a current density of 100 mA/g and a good specific capacitance retention of ca. 90% after 1000 continuous charge-discharge cycles, indicating that the γ-MnO2 nanotubes can be promising electroactive materials for supercapacitor.

Key words: γ-MnO2 nanotubes, AAO template, supercapacitor