中国物理B ›› 2014, Vol. 23 ›› Issue (5): 57205-057205.doi: 10.1088/1674-1056/23/5/057205

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Fabrication and electrochemical performance of graphene-ZnO nanocomposites

李振鹏, 门传玲, 王婉, 曹军   

  1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • 收稿日期:2013-10-15 修回日期:2013-11-25 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61265004, 51272097, and 11204113), the Nature and Science Fund from Yunnan Province Ministry of Education, China (Grant No. 2011C13211708), and the Natural Training Project from University of Shanghai for Science and Technology, China (Grant No. 14XPM06).

Fabrication and electrochemical performance of graphene-ZnO nanocomposites

Li Zhen-Peng (李振鹏), Men Chuan-Ling (门传玲), Wang Wan (王婉), Cao Jun (曹军)   

  1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Received:2013-10-15 Revised:2013-11-25 Online:2014-05-15 Published:2014-05-15
  • Contact: Men Chuan-Ling E-mail:qiu@kmust.edu.cn
  • About author:72.80.Tm; 82.45.Rr; 82.47.Uv
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61265004, 51272097, and 11204113), the Nature and Science Fund from Yunnan Province Ministry of Education, China (Grant No. 2011C13211708), and the Natural Training Project from University of Shanghai for Science and Technology, China (Grant No. 14XPM06).

摘要:

Graphene-ZnO nanocomposites were synthesized successfully through a one-step solvothermal approach. The morphology, structure, and composition of the prepared nanocomposites were investigated by scanning electron microscopy (SEM), transmission electron microscope (TEM), laser micro Raman spectroscopy, and Fourier transform infra-red spectroscopy (FT-IR). The outcomes confirmed that this approach is comparatively steady, practicable, and operable compared with other reported methods. The electrochemical performance of the graphene-ZnO electrodes was analyzed through cyclic voltammetry, altering-current (AC) impedance, and chronopotentiometry tests. The graphene-ZnO electrodes exhibited an improved electrode performance with higher specific capacitance (115 F·g-1), higher electrochemical stability, and higher energy density than the graphene electrodes and most reported graphene-ZnO electrodes. Graphene-ZnO nanocomposites have a steady reversible charge/discharge behavior, which makes them promising candidates for electrochemical capacitors (ECs).

关键词: graphene-ZnO nanocomposites, electrochemical performance, electrochemical capacitors

Abstract:

Graphene-ZnO nanocomposites were synthesized successfully through a one-step solvothermal approach. The morphology, structure, and composition of the prepared nanocomposites were investigated by scanning electron microscopy (SEM), transmission electron microscope (TEM), laser micro Raman spectroscopy, and Fourier transform infra-red spectroscopy (FT-IR). The outcomes confirmed that this approach is comparatively steady, practicable, and operable compared with other reported methods. The electrochemical performance of the graphene-ZnO electrodes was analyzed through cyclic voltammetry, altering-current (AC) impedance, and chronopotentiometry tests. The graphene-ZnO electrodes exhibited an improved electrode performance with higher specific capacitance (115 F·g-1), higher electrochemical stability, and higher energy density than the graphene electrodes and most reported graphene-ZnO electrodes. Graphene-ZnO nanocomposites have a steady reversible charge/discharge behavior, which makes them promising candidates for electrochemical capacitors (ECs).

Key words: graphene-ZnO nanocomposites, electrochemical performance, electrochemical capacitors

中图分类号:  (Composite materials)

  • 72.80.Tm
82.45.Rr (Electroanalytical chemistry) 82.47.Uv (Electrochemical capacitors; supercapacitors)