Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (04): 837-842.doi: 10.3866/PKU.WHXB201202074

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Preparation of Ordered Mesoporous Carbon/NiCo2O4 Electrode and Its Electrochemical Capacitive Behavior

CHE Qian, ZHANG Fang, ZHANG Xiao-Gang, LU Xiang-Jun, DING Bing, ZHU Jia-Jia   

  1. College of Material Science & Engneering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
  • Received:2011-10-31 Revised:2012-02-01 Published:2012-03-21
  • Contact: ZHANG Xiao-Gang
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20873064), Natural Science Foundation of Jiangsu Province, China (BK2011030), and Specialized Research Fund for the Doctoral Program of Higher Education of China (20060287026).

Abstract: OMC/NiCo2O4 composite was prepared by co-precipitation with ordered mesoporous carbon (OMC) as a support. The crystalline structure and morphology of the composite were investigated by X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, and transmission electron microscopy (TEM). TEM images showed that NiCo2O4 was uniformly coated on the OMC. Cyclic voltammetry and galvanostatic charge-discharge were used to investigate the electrochemical performance of the OMC/ NiCo2O4 composite. The specific capacitances of the OMC/NiCo2O4 composite with a mass fraction of 40% NiCo2O4 were 577.0 F·g-1 at a current density of 1 A·g-1 and 470.8 F·g-1 at 8 A·g-1. The specific capacitance remains at 508.4 F·g-1 after 2000 cycles at a current density of 2 A·g-1, with a capacitance retention of 92.7%.

Key words: Supercapacitor, Ordered mesoporous carbon, NiCo2O4, Co-precipitation method