Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (02): 455-460.doi: 10.3866/PKU.WHXB20110228

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Preparation of Water Soluble Chitosan-Based Porous Carbon/NiO Composites and Their Electrochemical Capacitive Behavior

ZHANG Hai-Jun1, ZHANG Xiao-Gang1, YUAN Chang-Zhou1, GAO Bo1, SUN Kang2, FU Qing-Bin1, LU Xiang-Jun1, JIANG Jian-Chun2   

  1. 1. College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China;
    2. Institute of Chemical Industry of Forest Products, Nanjing 210042, P. R. China
  • Received:2010-09-20 Revised:2010-11-30 Published:2011-01-25
  • Contact: ZHANG Xiao-Gang E-mail:azhangxg@163.com
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (973) (2007CB209703) and Key Laboratory of Biomass Energy and Material, Jiangsu Province, China (2010M001).

Abstract:

Porous carbons were prepared by the carbonization of water soluble chitosan and they were then used to synthesize porous C/NiO composites. Transmission electron microscopy (TEM), X-ray diffraction (XRD), and nitrogen adsorption-desorption experinents were used to characterize the structure and morphology of the products. The results showed that the mesopore-rich composites consisted of NiO crystallites and porous carbon. The electrochemical properties of the porous C/NiO composites were studied by cyclic voltammetry (CV) and galvanostatic charge/discharge measurements. We found that compared with porous carbon, the composites showed superior electrochemical capacitive performance. When the mass ratio of nickel to carbon was 2:20, the composite had a large specific capacitance of 355 F·g-1 at a current density of 0.1 A·g-1 and excellent cyclability with a capacity retention of about 99% after 1500 cycles.

Key words: Supercapacitor, Chitosan, Porous carbon, Nickel oxide

MSC2000: 

  • O646