Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (4): 685-692.doi: 10.3866/PKU.WHXB201502022

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Nitrogen-Doped Porous Carbon Derived from Dopamine-Modified Polypyrrole and Its Electrochemical Capacitive Behavior

YANG Shuo, XU Gui-Yin, HAN Jin-Peng, BING Huan, DOU Hui, ZHANG Xiao-Gang   

  1. Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
  • Received:2014-10-09 Revised:2015-01-30 Published:2015-04-03
  • 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) (2014CB239701), National Natural Science Foundation of China (21103091, 21173120, 51372116), and Natural Science Foundation of Jiangsu Province, China (BK2011030).

Abstract:

Carbonization of a nitrogen-containing polymer under inert atmosphere has been used to obtain nitrogen-enriched carbon materials. Herein, we synthesized dopamine-modified polypyrrole (PDA-PPy) via chemical polymerization, which was then carbonized under nitrogen atmosphere to produce nitrogen-doped porous carbon materials (NPC). The structure and morphology of the NPC were investigated by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). By regulating the molar ratio of pyrrole monomer to dopamine, the morphology of PDA-PPy and the capacitive performance of NPC could be controlled. At a current density of 0.5 A·g-1, the specific capacitance of NPC-0.5 (the molar ratio of dopamine to pyrrole monomer is 0.5) is ca 210 F·g-1. Even at a current density of 10 A·g-1, the specific capacitance of NPC-0.5 is up to 134 F·g-1 and the retention rate is 63.8%.

Key words: Pyrrole, Dopamine, Porous carbon, Nitrogen-doping, Supercapacitor

MSC2000: 

  • O646