物理化学学报 >> 2015, Vol. 31 >> Issue (4): 685-692.doi: 10.3866/PKU.WHXB201502022

电化学和新能源 上一篇    下一篇

多巴胺改性聚吡咯衍生掺氮多孔碳材料的制备及其超电容性能

杨硕, 徐桂银, 韩金鹏, 邴欢, 窦辉, 张校刚   

  1. 南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京210016
  • 收稿日期:2014-10-09 修回日期:2015-01-30 发布日期:2015-04-03
  • 通讯作者: 张校刚 E-mail:azhangxg@163.com
  • 基金资助:

    国家重点基础研究发展规划(973) (2014CB239701), 国家自然科学基金(21103091, 21173120, 51372116)以及江苏省自然科学基金(BK2011030)资助项目

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).

摘要:

含氮聚合物材料在惰性气氛下热解能够产生掺氮多孔碳材料. 基于化学聚合法合成多巴胺(DA)改性的聚吡咯(PDA-PPy), 高温热解制备出掺氮多孔碳材料(NPC). 用傅里叶变换红外(FTIR)光谱, 拉曼光谱, X射线光电子能谱(XPS)分析和扫描电镜(SEM)研究其结构与形貌. 随着DA 与吡咯(Py)单体的摩尔比不断变化,PDA-PPy的形貌也随之改变, 进而影响NPC的超电容性能. 循环伏安和恒流充放电测试表明, 当DA与Py 单体的摩尔比为0.5时, 在0.5 A·g-1的电流密度下, NPC的比电容可以达到210 F·g-1, 电流密度为10 A·g-1时, 比电容可以达到134 F·g-1, 电容保持率为63.8%.

关键词: 吡咯, 多巴胺, 多孔碳, 氮掺杂, 超级电容器

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