Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (11): 2199-2204.doi: 10.3866/PKU.WHXB20091023

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Preparation of Polypyrrole/Benzenesulfonic Functionalized Multi-Walled Carbon Nanotubes Induced by Hydrogen Bonding and Their Electrochemical Behavior

FU Qing-Bin, GAO Bo, SU Ling-Hao, YUAN Chang-Zhou, LU Xiang-Jun, ZHANG Xiao-Gang   

  1. College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
  • Received:2009-04-17 Revised:2009-06-24 Published:2009-10-28
  • Contact: ZHANG Xiao-Gang E-mail:azhangxg@163.com

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Abstract:

Multi-walled carbon nanotubes were functionalized using in situ generated aryl diazonium and were then used to synthesize polypyrrole/benzenesulfonic functionalized multi-walled carbon nanotube composites (PPy/f-MWCNTs). Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) results indicated that a uniform PPy was successfully coated onto the sidewall of the f-MWCNTs, which was induced by hydrogen bonding. Cyclic voltammetry and galvanostatic charge/discharge measurements results showed that the composite possessed good electrochemical capacitive performance. The composite with m(PPy):m(MWCNTs) of 1:1 had a capacity of 266 F·g-1 at a current density of 1.0 A·g-1, and the utilization of PPy was more than one time higher than polypyrrole/un-functionalized multi-walled carbon nanotube composites (PPy/p-MWCNTs) and pure PPy.

Key words: Supercapacitor, Polypyrrole, Carbon nanotube, Benzenesulfonic functionalization

MSC2000: 

  • O644