Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (11): 2385-2391.doi: 10.3866/PKU.WHXB201309051

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Preparation of Polypyrrole/Sodium Alginate Nanospheres and Their Application for High-Performance Supercapacitors

MA Guo-Fu1, MU Jing-Jing1, ZHANG Zhi-Guo1, SUN Kan-Jun2, PENG Hui1, LEI Zi-Qiang1   

  1. 1 Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China;
    2 College of Chemistry and Environmental Science, Lanzhou City University, Lanzhou 730070, P. R. China
  • Received:2013-05-27 Revised:2013-09-04 Published:2013-10-30
  • Contact: MA Guo-Fu E-mail:magf@nwnu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21164009, 21174114) and Program for Changjiang Scholars and Innovative Research Team in University, China (IRT1177).

Abstract:

Polypyrrole/sodium alginate (PPy/SA) nanospheres are successfully synthesized by oxidative polymerization of pyrrole using sodium alginate as structural templating agent. The morphology and structure of the PPy/SAnanospheres were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. Their electrochemical properties are investigated by cyclic voltammetry (CV) and galvanostatic charge-discharge tests. The PPy/SAnanospheres exhibit a high specific capacitance of 347 F·g-1 at a charge-discharge current density of 1 A·g-1 in 1 mol·L-1 KCl electrolyte. Unlike pure PPy, there was little attenuation in the capacitance of the PPy/SAnanospheres over 500 continuous charging-discharging cycles demonstrating good electrochemical stability. This result indicates that PPy/SAnanospheres are a promising candidate for high-performance supercapacitors.

Key words: Polypyrrole, Sodium alginate, Nanosphere, Supercapacitor, Electrode material

MSC2000: 

  • O646